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Scalloped Potatoes

This is one of those side dishes that makes any dinner feel like Sunday dinner. The key is getting the sauce thick enough before it goes in the oven so it doesn't turn watery.
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Prep Time: 20 minutes
Cook Time: 1 hour 30 minutes
Total Time: 1 hour 50 minutes

Ingredients

~6 servings

  • 3 Tbsp butter
  • 1/4 cup all-purpose flour
  • 1 1/4 tsp salt
  • 1/4 tsp black pepper
  • 2 1/2 cups whole milk
  • 2 1/4 lbs potatoes peeled and sliced into 1/8" slices
  • 1/2 large onion thinly sliced

Instructions

  • Preheat oven to 350F and grease 9x9 baking dish.
  • Melt butter in saucepan, whisk in flour, salt, and pepper to make roux.
  • Gradually add milk, whisking to prevent lumps.
  • Bring sauce to boil, stirring until thickened, about 3-4 minutes.
  • Layer 1/3 potato slices in dish, overlapping.
  • Top with 1/3 onion slices and 1/3 cream sauce.
  • Repeat layering twice more, ending with sauce covering potatoes.
  • Cover with foil and bake 75 minutes.
  • Remove foil, bake 15 more minutes until top browns.
  • Test potatoes with fork for tenderness.
  • Let rest 10 minutes before serving.

Notes

Sauce will thicken as it cools.
Tried this recipe?Leave a comment below & let me know!