A proper scalloped potatoes recipe is the American kitchen-classic side: thin-shingled Russets baked in a milk-and-cream sauce thickened by a light flour roux, with sharp cheddar folded between layers or left out entirely for the traditional version. One 9 by 13 dish, 85 minutes start to finish, eight servings of Easter-ham, Sunday-supper, church-potluck comfort. This is not gratin dauphinois; this is the dish the American table has been calling scalloped potatoes since the 18th century.
If you grew up in a household where Easter dinner meant a glazed ham and a bubbling 9 by 13 of potatoes, you already know this dish. Scalloped potatoes are the American kitchen classic that has been quietly distinct from its French cousin for over two hundred years. Looking for the French Dauphinois version with heavy cream and Gruyere? That’s creamy potatoes au gratin. This is the American kitchen-classic: milk, a touch of flour, sharp cheddar. The distinction is small in print and huge on the plate.
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Where Scalloped Potatoes Came From
The word scalloped is older than the dish. In 18th-century English cookery, to scallop a food meant to bake it in a cream sauce, often crowned with breadcrumbs, regardless of the main ingredient. Scalloped oysters, scalloped fish, scalloped eggs. The name traces to Old English collop, meaning a slice, and refers to the thin, overlapping pieces of food fanned across the dish like the ridges of a scallop shell. When English settlers carried the technique to North America, potatoes were the cheap, abundant canvas, and the recipe found a permanent home in the cookbooks of the American Midwest. Through the 19th and 20th centuries it became the regional standard: the church-potluck Pyrex, the Easter side, the dish that travels well and reheats forgivingly.
This is the contrast with gratin dauphinois, first documented on July 12, 1788, at a banquet hosted by Lieutenant General Charles-Henri, Duc de Clermont-Tonnerre, in the French Dauphine region. The original French version is heavy cream, garlic, salt, nutmeg, and potato. No flour, no cheese in the original, no shortcut. Scalloped is American comfort: milk-based, flour-thickened, sharp cheddar (or none), built for a potluck. Gratin is French elegance. The two recipes share a baking dish and almost nothing else.
A Few Notes on the Ingredients
- Russet potatoes: The canonical American choice. The high starch content (around 22 percent) helps thicken the sauce as the dish bakes, and the dry, mealy flesh drinks up the milk and turns smooth inside the slice.
- Yukon Gold: The approved swap. Medium-starch, waxier, slightly more structured between the layers, with a faint buttery yellow that reads pretty in the cross-section. Peel either choice; the skins toughen during baking.
- 1/8-inch mandoline slice: Non-negotiable. Hand-sliced potatoes produce irregular thicknesses, and the difference between a 1/16-inch slice and a 3/16-inch slice is the difference between mush and crunch in the same pan.
- 30-second cold-water rinse: The editor’s move that separates a clean scalloped from a gluey one. Long enough to rinse away the surface starch that turns the sauce pasty, while leaving plenty of internal starch to do its job during the bake.
- 50/50 whole milk and heavy cream: The American compromise: enough richness to read holiday, enough milk to stay closer to the original technique.
- Flour roux: The single most important variable separating scalloped from gratin. Without it, the dish belongs in the French lane; with it, the sauce holds together as a proper bechamel.
- Sharp cheddar (or none): The American answer. Gruyere belongs in the gratin recipe. For the traditional 19th-century version, leave the cheese out entirely. Both are correct; both are scalloped potatoes.
Recipe: Scalloped Potatoes
Prep time: 20 minutes | Cook time: 65 minutes | Total time: 1 hour 25 minutes | Serves: 8
Ingredients
- 3 lb (1.4 kg) Russet potatoes, peeled and sliced 1/8 inch on a mandoline
- 1/4 cup (57 g) unsalted butter
- 1 small yellow onion, diced
- 2 cloves garlic, minced
- 3 tbsp (24 g) all-purpose flour
- 1 1/2 cups (360 ml) whole milk
- 1 1/2 cups (360 ml) heavy cream
- 1 1/2 tsp salt
- 1/2 tsp black pepper, freshly ground
- 1/4 tsp ground nutmeg
- 1 1/2 cups (150 g) sharp cheddar, grated on the box grater (optional; leave out for the traditional American version)
- 2 tbsp (8 g) fresh parsley, chopped
Instructions
- Heat the oven to 375°F (190°C) with a rack in the middle position. Rub the inside of a 9 by 13-inch (23 by 33 cm) ceramic baking dish with about a teaspoon of the butter, walls included.
- In a medium saucepan, melt the remaining butter over medium heat. Add the diced onion and cook, stirring, until softened and translucent, about 5 minutes. Add the minced garlic and cook for 30 seconds until fragrant; do not let it brown.
- Sprinkle the 3 tbsp (24 g) flour over the butter and onion and whisk constantly for 1 minute to cook out the raw flour taste. The mixture should look like wet sand and smell faintly nutty.
- Gradually whisk in the 1 1/2 cups (360 ml) milk and 1 1/2 cups (360 ml) heavy cream, pouring in a thin stream while whisking to prevent lumps. Bring to a low simmer and cook, stirring often, until the sauce thickens enough to coat the back of a spoon, 3 to 4 minutes. Stir in the 1 1/2 tsp salt, 1/2 tsp pepper, and 1/4 tsp nutmeg, then remove from the heat.
- Slide the sliced potatoes into a large bowl of cold water and swish them around for 30 seconds. Drain hard in a colander and pat dry with a clean kitchen towel. This removes the surface starch that turns sauces gluey without stripping the starch the bake needs to thicken.
- Layer one-third of the potato slices into the buttered dish in overlapping shingled rows, like roof tiles fanned slightly. Pour one-third of the sauce evenly over the top. If using cheese, scatter one-third of the cheddar. Repeat the layering twice more, ending with sauce and cheese (if using) on top.
- Cover the dish tightly with foil and bake on the middle rack for 45 minutes. The foil traps steam and cooks the potatoes through without scorching the top.
- Remove the foil and continue baking, uncovered, for 20 more minutes, until the top turns golden brown and the sauce visibly bubbles around the edges. An instant-read thermometer in the center should read 200°F (93°C).
- Rest the dish on a wire rack for 10 minutes before serving. The sauce tightens as it cools, and a brief rest gives you clean squares out of the dish. Scatter the chopped parsley across the top just before bringing it to the table.
Notes
Stored covered in the refrigerator, scalloped potatoes keep 3 to 4 days. The flavor deepens overnight and the layers firm up, which makes day-two slices easier to plate.
To reheat without drying the dish out, cover tightly with foil, splash a tablespoon of milk or cream across the top, and warm at 325°F (160°C) for 20 to 25 minutes until heated through. Skip the microwave; it dries the top crust and warms the layers unevenly.
To scale for 12, multiply every ingredient by 1.5 and use a larger 11 by 15-inch (28 by 38 cm) dish or a deep 9 by 13 with two-inch sides. Add 10 to 15 minutes to the covered bake time and confirm the center reads 200°F (93°C) before pulling the foil for the final browning.
Tips and Variations
Scalloped vs Au Gratin: The Real Distinction
Scalloped potatoes are layered in a milk-based sauce thickened with a flour roux, traditionally with no cheese or sharp cheddar only, American heritage. Au gratin is layered in heavy cream, always with cheese (Gruyere canonically), browned crust on top, French heritage from gratin dauphinois. If a recipe calls for flour and milk, it is scalloped. If it calls for heavy cream and Gruyere with no roux, it is au gratin. The two share a baking dish and almost nothing else, and the version you want depends on whether the meal is reading church-potluck (scalloped) or dinner-party (gratin).
How to Pick Between Russet and Yukon Gold
Russet is the canonical American choice and what this recipe is built around. The high starch content (around 22 percent) helps thicken the sauce as the dish bakes, the dry flesh absorbs milk willingly, and the finished texture reads soft and pillowy. Yukon Gold is the swap if you want a slightly firmer layer with a buttery yellow color in the cross-section. Both work; neither is wrong. Skip the red potatoes and the fingerlings, which stay too waxy and never integrate with the sauce. Peel either choice, because the skin toughens during baking and undermines the soft layered texture the dish is built on.
The Cheddar-or-No-Cheese Question
Both are correct. Sharp cheddar is the modern American canonical answer, and what most home cooks remember from the family Easter table. The traditional 19th-century version had no cheese at all, just milk, butter, flour, and potatoes; the cheese was an American addition somewhere in the early 20th century. If you skip the cheddar, the dish leans cleaner and more austere, closer to the original British scalloped technique. With it, the dish leans richer and more potluck-coded. Try both versions across a couple of Easters and pick the lane that matches your table.
Make-Ahead Strategy for Easter Service
Assemble the entire dish up to 24 hours in advance, stopping after the final layer of sauce and cheese. Cover tightly with plastic wrap and refrigerate. Pull the dish 30 minutes before baking to take the chill off, then bake covered at 375°F (190°C) for 55 to 60 minutes (an extra 10 to 15 minutes over the from-fresh time), uncover, and finish for 20 minutes. This is the strategy worth using for Easter and Christmas: the potatoes go into the oven while the ham rests, and the timing lines up cleanly with the rest of the holiday plate.
Why Shingled Layers Beat Random Stacking
The dish is literally named for this. Scallop refers to the fanned, overlapping arrangement of slices, like the ridges of a shell or the tiles on a roof. Shingled potatoes guarantee even sauce contact: every disc sits in the bechamel, no slice gets left dry on top, and the cross-section reads magazine-cover when you cut into it. Dumped potatoes give you pockets of dry slices and pools of unabsorbed sauce, and the finished dish reads casserole-mishap instead of holiday-side. The 60 seconds it takes to fan the layers properly is the visible difference between a good scalloped and a great one.
What to Serve It With
Easter ham is the canonical pairing, the spring-holiday plate that scalloped potatoes were practically built around: salt-cured ham, glaze caramelizing at the edge, creamy potatoes bubbling alongside. Christmas prime rib and standing rib roast pick up the same balance with more savory weight. Roast leg of lamb with rosemary works for Easter or a spring dinner. Sunday-supper pot roast, meatloaf, and baked chicken all sit comfortably next to a 9 by 13 of these. For a summer angle, serve with pulled pork, smoked brisket, or ribs at a backyard cookout. Add something green to cut the richness: steamed asparagus, roasted green beans, peas with butter, or a sharp arugula salad with lemon vinaigrette.
FAQ
What is the difference between scalloped potatoes and potatoes au gratin?
Scalloped potatoes are layered in a milk-and-cream sauce thickened with a flour roux, traditionally with no cheese or sharp cheddar only. The lineage is English and American: an 18th-century British cooking technique that became a Midwestern church-potluck staple. Au gratin uses heavy cream (no flour, no roux), always includes cheese (Gruyere canonically), and traces to French gratin dauphinois first documented in 1788. Scalloped is American comfort; au gratin is French elegance.
Can I use milk instead of heavy cream?
Yes. Whole milk is the traditional choice for scalloped potatoes, and a milk-only version is cleanly authentic. The 50/50 milk-and-heavy-cream split in this recipe is the modern American sweet spot: enough richness to read holiday, not so heavy it crosses into gratin territory. If using all milk, the dish reads cleaner and slightly leaner. Avoid swapping in half-and-half on its own, which sometimes splits under sustained 375°F heat.
Why did my scalloped potatoes turn out gluey?
Excess surface starch. When potato slices are layered into a sauce with their cut surfaces still coated in raw starch, that starch dissolves into the sauce and turns the whole dish pasty. A 30-second rinse in cold water after slicing removes the surface starch while preserving the internal starch the bake needs. Pat the slices dry before layering so they do not water down the bechamel.
Why are my scalloped potatoes watery?
Two likely causes. The roux was under-cooked, so the sauce never thickened properly before going into the dish; whisk the flour and butter for a full minute and simmer the milk-and-cream mixture until it coats the back of a spoon. Or the uncovered bake was too short; the final 20 minutes without foil is when the sauce sets and the top browns. Resting the dish 10 minutes after the bake also pulls the texture together as the sauce cools.
Can I make scalloped potatoes ahead of time?
Yes. Assemble the dish fully (sauce poured, cheese on top), cover tightly with plastic wrap, and refrigerate up to 24 hours. Pull it 30 minutes before baking, then bake covered for an extra 10 to 15 minutes over the from-fresh time, uncover, and finish for 20 minutes. Alternatively, fully bake the dish, cool, refrigerate, and reheat covered at 325°F (160°C) for 25 minutes with a splash of milk or cream on top.
What cheese is best for scalloped potatoes?
Sharp cheddar, the American canonical choice. Save Gruyere for the au gratin lane, where it belongs. Aged white cheddar, a sharp yellow cheddar, or a mild Colby all work. Skip the pre-shredded bagged stuff; the anti-caking starch on those shreds refuses to melt cleanly and breaks the sauce. Grate from the block on a box grater the day you bake. For the truly classic 19th-century version, leave the cheese out entirely and let the milk-and-flour sauce do all the work.
Key Takeaways
- Scalloped potatoes use milk and a flour roux. Au gratin uses heavy cream and always cheese. They are not the same dish.
- Russet is the canonical American potato. Yukon Gold is the approved swap. Peel either.
- Slice at 1/8 inch on a mandoline. Uniform thickness equals uniform doneness.
- Rinse the sliced potatoes for 30 seconds in cold water, then pat dry. This is the fix for gluey scalloped potatoes.
- Sharp cheddar is the American canonical cheese, or leave it out entirely for the traditional version. Skip Gruyere.
- Bake covered at 375°F (190°C) for 45 minutes, uncover for 20 more, rest 10 minutes before serving.
Final Thoughts
What sets a true scalloped potato apart from its French cousin is the roux. The flour-thickened bechamel is the single technical detail that defines the American kitchen-classic version, and it is the reason the dish has lived on church-potluck tables for two hundred years instead of slipping into the dinner-party lane that gratin dauphinois owns. Milk, flour, butter, sharp cheddar (or none), Russet potatoes shingled in three layers, foil on for 45 minutes, foil off for 20. The recipe is plain, the technique is honest, and the finished pan is exactly what the Easter table is asking for.
The two moves that matter most are the 30-second rinse and the shingled layering. The rinse is the difference between a gluey pan and a clean one. The shingling is the difference between a casserole and a cross-section you would photograph. Neither takes much time and both are visible in the final dish; skipping either is the most common reason a scalloped potato recipe comes out worse than the one your grandmother used to make.
Make it for Easter ham, for Christmas prime rib, for the Sunday roast that brings the family to the table. Make the cheddar version for the modern American plate or the no-cheese version for the 19th-century purist take. Either way, let it rest the full ten minutes before you cut into it. The sauce sets, the squares come out clean, and the dish lands on the table exactly the way it is supposed to: bubbling at the edges, golden across the top, and unmistakably, distinctly, scalloped.
