
Scalloped potatoes are a creamy baked dish made with thinly sliced potatoes layered in a rich sauce perfect as a comforting side for any meal.
Preheat the oven to 350°F. Grease a 9x13-inch baking dish and set aside.
In a large saucepan, melt the butter over medium-low heat. Add the onion and garlic and cook until the onion begins to soften, about 3 to 4 minutes. Stir in the flour and cook for 2 minutes more.
Layer ⅓ of the potatoes in the prepared dish, seasoning with ¼ teaspoon salt and ⅛ teaspoon pepper. Pour ⅓ of the cream sauce over top.