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Cheesy Scalloped Potatoes Recipe

Cheesy Scalloped Potatoes are the perfect comfort food with the creamy sauce and the cheese topping. The recipe is simple yet delicious and is perfect for a weeknight side or to serve with a holiday dinner.
Prep Time15 minutes
Cook Time1 hour 15 minutes
Resting time15 minutes
Course: Dinner, Side Dish
Cuisine: American
Keyword: cheesy scalloped potatoes, potatoes, scalloped potatoes

Equipment

  • 1 8x8 inch casserole dish

Ingredients

  • 3 cups (1½ pounds) Yukon Gold or Russet potatoes (about 5 medium potatoes)
  • ½ medium onion, finely diced
  • 4 tablespoons flour
  • salt and pepper to taste
  • 2 cups whole milk
  • 3 tablespoons butter, cubed
  • cups shredded cheddar cheese
  • 1 tablespoon chopped fresh parsley, for garnish

Instructions

  • Preheat the oven to 375 degrees. Spray the bottom and sides of an 8×8-inch baking dish with non-stick spray.
  • In a medium saucepan, heat milk on medium high to almost boiling and then lower to simmer and keep warm.
  • Peel the potatoes, then use a mandolin or sharp knife for a thin slice about ¼ inch thick. Finely chop the onions.
  • Place a single layer of potatoes with just a little overlapping in the bottom of the casserole dish.
  • Add a layer of onions, sprinkle one tablespoon of flour over the potatoes and onions, and season with some salt and pepper.
  • Repeat this process for two more layers ending with the flour on top. Season with a bit more salt and pepper, if desired. You should have a total of 3 layers when finished.
  • Top with cubed butter and pour milk over the layers in the baking dish.
  • Sprinkle the top of the potatoes with shredded cheese. 
  • Bake covered with aluminum foil for about 50 minutes, until the potatoes are fork tender. Uncover and bake until the cheese bubbles and browns. (approx 15 minutes). If desired, in the last couple of minutes, turn the broiler on to get the cheesy topping a bit more brown.
    Remove the baking dish from the oven, and let it stand for 15 minutes or until the sauce thickens more.

Notes

  • Be sure to slice potatoes thin to have them evenly cook. Using a mandolin slicer makes this easier, just watch your fingers!
  • Change out the shredded cheddar for your favorite cheese. Mozzarella, gouda, fontina, or gruyere would also be delicious in this.
  • Add a pinch of cayenne and garlic powder to the salt and pepper mix.
  • Use half sweet potato slices with the Yukon Gold or Russets, or use all sweet potatoes.
  • You can substitute heavy cream for the milk or even half and half.
  • Add some diced cooked ham to the casserole to make this a main course.