Traditional Baked Scalloped Potatoes

🕒 Prep: 20 min
đŸ”„ Cook: 1 hour 15 min
đŸœ Serves: 8
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Baked scalloped potatoes are the ultimate comfort food, combining tender layers of potatoes with a creamy, cheesy sauce. Perfect for holidays or a cozy family dinner, this dish brings warmth and flavor to any table.

Traditional Baked Scalloped Potatoes

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Ingredients for Traditional Baked Scalloped Potatoes

Ingredients for Traditional Baked Scalloped Potatoes

Russet potatoes are ideal for this recipe because they hold their shape well and soak up the creamy sauce perfectly. Butter adds richness and helps create the base of the sauce. When you melt it with the onions and garlic, it forms the aromatic foundation of the dish. Flour thickens the sauce, while whole milk makes it creamy. Sharp cheddar cheese brings a bold, tangy flavor, and a sprinkle of Parmesan cheese on top offers a deliciously crisp finish. The salt, black pepper, and nutmeg enhance the flavors, while a bit of fresh parsley adds a pop of color at the end.

Why This Traditional Baked Scalloped Potatoes Works

During cooking, the butter, flour, and milk turn into a thick white sauce that can actually cling to the potato slices. As it heats, the flour soaks up the milk and swells, so the sauce goes from runny to smooth and thick. Once the cheddar melts into that hot sauce, it stays creamy instead of separating, and it can slide down between the potato slices and coat them.

In the oven, the thin potato slices slowly soften as they sit in that hot cheese sauce. Starch from the potatoes leaks out into the sauce and makes it even thicker, so the layers start to hold together instead of sliding apart. Covered baking keeps the top from drying out while the inside cooks through. Later, when the foil comes off, the Parmesan on top dries and browns, so the top layer turns golden and a little crisp while the potatoes underneath stay soft and creamy.

Traditional Baked Scalloped Potatoes Tips & Tricks

  • Use a mandoline for evenly sliced potatoes, which helps them cook uniformly.
  • Let the dish rest for 10 minutes before serving; this helps the sauce set and makes serving easier.
  • If you want a bit of extra crunch, add breadcrumbs mixed with melted butter on top before the final bake.

Mistakes To Avoid

Cutting the potatoes too thick means the top can look browned and done while the slices in the middle stay hard and undercooked. The sauce bubbles around them, but the heat doesn’t reach the center of each slice in time. The dish ends up with a soft top layer and a crunchy, raw-tasting middle.

Pouring the milk in too fast when making the sauce often leaves flour lumps that never fully smooth out. Those lumps thicken in the oven and turn into gummy, pasty bits in the finished potatoes. Instead of a smooth, creamy layer between the slices, there are pockets of thick paste.

Taking the dish out right at the time listed without checking tenderness can leave the potatoes slightly firm. Ovens run differently, so the sauce might be hot and bubbling while the potatoes still resist a knife. The final casserole then cuts into stiff layers instead of soft, melt-in-the-mouth slices.

Cranking the oven hotter to “speed it up” causes the top to brown fast while the inside lags behind. The cheese on top can dry out and turn tough before the potatoes have a chance to soften all the way through.

Equipment Used:

9x13 inch baking dish, large saucepan, whisk, aluminum foil

Ingredients

  1. 4 lbs Russet potatoes, peeled and thinly sliced
  2. 1/2 cup unsalted butter
  3. 1/2 cup all-purpose flour
  4. 4 cups whole milk
  5. 2 cups shredded sharp cheddar cheese
  6. 1 medium onion, finely chopped
  7. 2 cloves garlic, minced
  8. 1 tsp salt
  9. 1/2 tsp black pepper
  10. 1/4 tsp ground nutmeg
  11. 1/4 cup grated Parmesan cheese
  12. 2 tbsp chopped fresh parsley for garnish

Step-by-step Instructions

  1. 1. Preheat oven to 350°F (175°C).
  2. 2. Butter a 9x13 inch baking dish and set aside.
  3. 3. In a large saucepan, melt butter over medium heat.
  4. 4. Add onions and garlic, sauté until onions are translucent.
  5. 5. Stir in flour and cook for 1-2 minutes, until lightly golden.
  6. 6. Gradually whisk in milk, ensuring no lumps remain.
  7. 7. Continue to cook, stirring constantly, until sauce thickens.
  8. 8. Remove from heat and stir in cheddar cheese, salt, pepper, and nutmeg until cheese is melted.
  9. 9. Layer half of the sliced potatoes in the prepared baking dish.
  10. 10. Pour half of the cheese sauce over the potatoes.
  11. 11. Repeat with remaining potatoes and cheese sauce.
  12. 12. Sprinkle Parmesan cheese on top.
  13. 13. Cover with foil and bake for 45 minutes.
  14. 14. Remove foil and bake an additional 30 minutes, or until potatoes are tender and top is golden brown.
  15. 15. Garnish with parsley before serving.

Frequently Asked Questions

Can I make this dish ahead of time?
Yes, you can prepare it up to the baking step, cover, and refrigerate for up to 24 hours. Add a few extra minutes to the baking time if baking straight from the fridge.
Can I use a different type of cheese?
Absolutely! GruyĂšre or fontina are great alternatives that melt well and add unique flavors.
What if I don't have fresh parsley?
You can substitute with a sprinkle of dried parsley or chives for a similar touch of color.

Serving Ideas for Traditional Baked Scalloped Potatoes

This scalloped potato dish pairs beautifully with roasted meats like chicken, turkey, or beef. For a vegetarian meal, you can serve it alongside a crisp green salad with a zesty vinaigrette to balance out the richness.

Ratings and Comments

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This recipe is for informational purposes only. Always follow proper food safety practices, cook foods to safe internal temperatures, and store leftovers appropriately. Results may vary.