A timeless side dish that brings warmth to the table homemade scalloped potatoes are known for their comforting layers and creamy texture. They pair well with everything from ham to roast beef and are just as fitting for a weeknight meal or holiday spread.
Coat the bottoms and sides of an 8x8 baking dish with non-stick cooking spray.
Lay 1 cup of the potatoes on the bottom of the pan, then sprinkle with ⅓ cup of the onions, 1 teaspoon of flour, salt, and pepper. Repeat the layers 2 more times with the remaining potatoes, onions, flour, salt, and pepper (flour should be the last on the top layer.)
Top the casserole with the butter cubes.
Heat the milk in a small saucepan over medium high heat until hot. Pour the milk over the casserole. Top with the cheese.
Cover the casserole with aluminum foil (or casserole lid) and bake for 50 minutes.
Remove the cover from the scalloped potatoes and bake 15 minutes, until the cheese bubbles and is golden brown.
Remove the casserole from the oven and let stand for 20 minutes, or until the sauce thickens.