Side Dishes
Martha Stewart's au gratin potatoes recipe delivers the ultimate comfort food experience with its signature golden crust and creamy, pull-apart layers. This classic dish transforms simple potato slices into a rich, indulgent side that's perfect for holidays or family dinners.
The secret lies in the béchamel sauce and Gruyère cheese combination, which creates that signature texture and depth of flavor.
What sets this recipe apart is the careful layering technique that ensures each bite delivers the perfect balance of crispy potato edges and velvety cheese sauce. I've perfected this method over years of testing, and it consistently produces restaurant-quality results at home.
The key steps—properly slicing the potatoes, building the béchamel from scratch, and baking at the right temperature—make all the difference in achieving that signature pull-apart texture.
By following these instructions, you'll end up with a dish that's creamy in the center, golden and crispy on top, and packed with rich, cheesy flavor throughout. The aroma alone will have everyone gathering around the table, and the first bite will confirm why this remains a timeless classic.
This recipe serves 8 and takes about 1 hour 15 minutes from start to finish, including prep and baking time.
The beauty of this dish is its versatility—it works as a side for roasted meats, a vegetarian main course, or even a comforting weeknight dinner.
For those looking to adapt the recipe, I'll share some variations in the tips section, including lighter alternatives that maintain the essence of the classic while reducing calories. Let's get started on creating this timeless dish that brings warmth and satisfaction to every meal.
Ingredients for martha stewart au gratin potatoes
The secret to Martha's signature au gratin lies in these 13 simple but essential ingredients.
| Ingredient | Amount | Notes |
|---|---|---|
| Russet Potatoes 🥔 | 3 lb | Thinly sliced, peeled preferred |
| Heavy Cream 🥛 | 2 cups | Full-fat for richness |
| Whole Milk 🥛 | 1 cup | Warmed for smooth sauce |
| Gruyère Cheese 🧀 | 2 cups | Shredded, aged preferred |
| Butter 🧈 | ½ cup | Unsalted, cubed |
| All-Purpose Flour 🌾 | ¼ cup | For béchamel roux |
| Garlic Cloves 🧄 | 4 cloves | Minced for depth |
| Shallots 🧅 | 2 whole | Thinly sliced, or sub onions |
| Salt 🧂 | 1 ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Nutmeg 🌿 | ¼ tsp | Freshly grated |
| Parmesan Cheese 🧀 | ½ cup | Freshly grated, optional |
| Breadcrumbs 🍞 | ¼ cup | Panko for extra crunch |
The potatoes are your foundation—Russets are non-negotiable for that fluffy texture. Grab the organic variety from Whole Foods if you can, but regular store-bought works too. Thin slices are key; a mandoline makes this job a breeze. For the Gruyère, avoid pre-shredded—it gets gummy when baked. Look for blocks at specialty cheese shops or the deli counter. The heavy cream? Full-fat is a must—none of that low-fat nonsense here. And don't skip the nutmeg—it's what gives that classic flavor.
No Gruyère? Comté or Emmental work in a pinch, but the flavor won't be identical. Short on breadcrumbs? Toasted almond flour adds crunch without gluten. The shallots can be swapped for onions if needed, but garlic is non-negotiable—it's the flavor backbone. For a lighter version, use half-and-half instead of heavy cream and reduce the cheese by 25%. The Parmesan is optional but adds that signature umami punch. And if you're feeling fancy, add a splash of white wine to the béchamel for extra depth.
This dish reheats beautifully—best the next day when flavors meld. Store leftovers in an airtight container for 4-5 days. For make-ahead magic, assemble the casserole, cover with foil, and refrigerate for up to 24 hours before baking. The cheese sauce freezes well too—portion into containers and freeze for 3 months. Pro tip: Sprinkle extra breadcrumbs on top before baking for that perfect golden crust—worth the extra minute
Why You'll Love This Recipe
- One-Pan Magic: I swear by this for lazy Sundays—just slice, layer, and bake. No chopping boards to clean, no extra pots, just one dish that smells like heaven while it works its magic. The Gruyère melts into that golden crust all by itself.
- Creamy-Gruyère Dream: That first forkful of buttery, stretchy cheese with the crispy top? It’s the kind of bite that makes you pause mid-meal. The heavy cream and milk make it rich but not heavy, while the Gruyère adds that nutty, melty depth that turns "dinner" into "experience."
- Weeknight to Holiday: Honestly, I make this for everything—weeknight dinners, potlucks, even Thanksgiving leftovers. Double the recipe, freeze half, and you’ve got a crowd-pleaser ready in 20 minutes. My kids ask for it more than pizza, and that’s saying something.
- Leftovers That Don’t Suck: Most casseroles turn to glue the next day, but not this one. The potatoes stay creamy, the cheese stays gooey, and the crispy bits? Even better reheated. I pack it for lunches or serve it cold with a salad—no one ever complains. (Yes, even on a Tuesday night.)
Step-by-step instructions for Martha Stewart's au gratin potatoes recipe
Here's how to create the perfect creamy, golden layers that make this dish legendary.
Prep and Parboil the Potatoes
Peel the 3 lb russet potatoes and slice them into even ⅛-inch thick rounds. I use a mandoline for perfect uniformity, but a sharp knife works too. The key is consistency—thick slices won't cook through while thin ones burn.
Boil the sliced potatoes in salted water for 8-10 minutes until they're just tender but still hold their shape when pierced with a fork. Drain immediately and transfer to a colander to steam-dry for 2 minutes. This step removes excess moisture that would make your au gratin soggy. Spread them on a baking sheet and let cool while you prepare the béchamel.
Make the Creamy Béchamel Sauce
In a large saucepan, melt the 0.5 cup butter over medium heat. Add the 2 whole shallots and 4 cloves minced garlic, cooking for 3-4 minutes until soft and fragrant but not browned. Stir in the 0.25 cup all-purpose flour and cook for 1 minute to remove the raw taste.
Slowly whisk in the 2 cups heavy cream and 1 cup whole milk, bringing the mixture to a gentle simmer. Cook for 5-7 minutes, stirring constantly, until the sauce thickens enough to coat the back of a spoon. Season immediately with 1.5 tsp salt, 0.5 tsp black pepper, and 0.25 tsp nutmeg. Remove from heat and stir in 1 cup of the shredded gruyère cheese until melted and smooth.
Layer Potatoes and Cheese
Preheat your oven to 375°F. In a 9x13-inch baking dish, spread half of the parboiled potatoes in an even layer. Pour half of the béchamel sauce over them, then sprinkle with half of the remaining gruyère cheese. Repeat with another layer of potatoes, sauce, and cheese. Finish with the final layer of potatoes.
Here's the Martha Stewart trick: press down gently on each potato layer to eliminate air pockets. This ensures even cooking and that perfect pull-apart texture. Sprinkle the 0.5 cup parmesan cheese and 0.25 cup breadcrumbs evenly over the top for extra crunch.
Bake to Golden Perfection
Bake uncovered for 45-50 minutes until the top is deep golden brown and the edges bubble around the sides. The center should still feel slightly soft when pressed—it'll firm up as it rests. If the top browns too quickly, tent loosely with foil for the last 15 minutes.
Let the au gratin rest for 10 minutes before serving. This allows the layers to set and makes slicing cleaner. The creamy sauce should be thick enough to cling to each potato slice, with a crispy, golden crust on top. Serve immediately with a simple green salad or roasted vegetables.
Pro Tips For Making Martha Stewart Au Gratin Potatoes
- PARBOIL POTATOES FIRST: Peel and cut your Russets into even ¼-inch slices, then boil them 5 minutes before baking. This keeps them from drying out or turning gummy—trust me, I’ve seen both happen when you skip this step. Drain well and pat them dry with a towel; any extra moisture will make your au gratin soggy instead of creamy.
- USE GRUYÈRE IN LAYERS: Sprinkle the cheese between the potato layers, not just on top. Gruyère melts unevenly, and layering ensures every bite gets that rich, gooey texture. I learned this after one batch where the top was perfect and the bottom tasted like plain potatoes.
- BAKE LOW AND SLOW: Start at 375°F (20 minutes), then drop to 350°F for the final 30-40 minutes. Rushing it burns the top before the center cooks—like I did the first time, ruining an otherwise great dish. A meat thermometer in the center (170°F) guarantees doneness without guesswork.
- WHISK COLD CREAM: Chill your heavy cream and milk before mixing with butter and cheese—it prevents curdling and keeps the sauce silky. I was skeptical until I tried it; now I swear by it, especially when making the béchamel ahead of time. Warm liquids turn this into scrambled eggs if you’re not careful.
Storing and reheating your martha stewart au gratin potatoes
Refrigerator Storage
Store leftovers in an airtight container for up to 4-5 days—the flavors actually deepen overnight as the cheese sauce melds with the potatoes. I recommend using glass Pyrex containers with snap-on lids to maintain freshness.
Always let the au gratin cool completely before refrigerating to prevent condensation, which can make the breadcrumb topping soggy. 🧀
Freezer-Friendly Sauce
The béchamel sauce freezes beautifully for up to 3 months—portion it into quart-sized freezer bags and squeeze out excess air to prevent freezer burn. Thaw overnight in the refrigerator before using.
For the full au gratin, assemble the dish, cover tightly with foil, and freeze for up to 2 months. Thaw in the fridge before baking to maintain texture. ❄️
Oven Reheating
For the best texture, reheat individual portions in a 9-inch oven-safe dish covered with foil at 350°F for 20-25 minutes. The gentle heat prevents the breadcrumb topping from drying out. If the sauce looks too thick after reheating, add 1-2 tablespoons of warm milk to restore creaminess. 🔥
Microwave Method
Use this quick option for smaller portions: Cover with a damp paper towel and microwave on 50% power for 2-3 minutes, stirring halfway. If the top seems dry, sprinkle a few drops of water and cover again for 30 seconds.
This method works best for single servings—not ideal for the whole dish. 💡
Make-Ahead Baking
Assemble the au gratin in your baking dish, cover tightly with foil, and refrigerate for up to 24 hours before baking. This actually enhances the flavor development.
When ready to bake, add 5-10 extra minutes to the cooking time to account for the cold start. The cheese will melt more evenly this way. 📅
Reviving Day-Old Texture
If your au gratin loses its crispy top after refrigeration, broil it for 2-3 minutes at the end of reheating. Sprinkle extra breadcrumbs on top before broiling for a fresh golden crust. For extra moisture, drizzle with warm heavy cream before serving. 💫
Nutrition facts
Frequently asked questions
Can I use sweet potatoes instead of russets?
Sweet potatoes won't work for this recipe—they have a different texture and moisture content that won't create the classic pull-apart layers. Stick with russets for that signature fluffy interior and crispy edges. If you're looking for a different potato variety, Yukon Golds might work in a pinch, but they'll be slightly creamier and less starchy.
Why is my au gratin watery after baking?
This usually happens when potatoes aren't properly drained after parboiling or if too much liquid is added during layering. Always steam-dry the slices for 2 minutes after draining, and use only enough béchamel to lightly coat the potatoes—not drown them. For extra insurance, let the dish rest 10 minutes before serving to let excess moisture evaporate.
What's the best way to make this dish ahead of time?
The secret is assembling the entire casserole, covering it tightly with foil, and refrigerating for up to 24 hours before baking. This actually enhances the flavor development. When ready to bake, add 5-10 extra minutes to the cooking time since it'll start cold. The cheese will melt more evenly, and you'll get that perfect golden crust without the risk of burning.
Can I make this recipe without dairy?
For a vegan version, substitute the heavy cream with full-fat coconut milk, use dairy-free butter, and replace the Gruyère with a nutritional yeast and cashew cheese blend. The béchamel will still thicken properly, though the flavor will be slightly different. For a lighter dairy option, try half-and-half instead of heavy cream and reduce the cheese by 25%.
How do I get the perfect golden crust on top?
The golden crust comes from a combination of proper layering and the final topping. After your last layer of potatoes, sprinkle the breadcrumbs and Parmesan evenly, then bake uncovered at 375°F until deeply browned. If it browns too quickly, tent loosely with foil for the last 15 minutes. For extra insurance, broil for 1-2 minutes at the very end if needed.