May be an image of shepherd's pie

Cheesy Onion Scalloped Potatoes

Few comfort foods are as satisfying as a bubbling dish of Cheesy Onion Scalloped Potatoes fresh from the oven. Layers of tender potatoes, sweet caramelized onions, creamy sauce, and melted cheese come together to create a rich and hearty side dish that pairs perfectly with roasted meats, grilled chicken, or even a simple green salad. This classic casserole is known for its creamy texture and golden cheesy crust that makes every bite irresistible.

The beauty of this recipe lies in its simplicity. With everyday ingredients and a little patience while layering, you can create a homemade dish that tastes warm, comforting, and deeply flavorful. Whether served during holidays, family dinners, or cozy weekends, cheesy onion scalloped potatoes always earn a place at the table.

Ingredients

6 large potatoes, peeled and thinly sliced
2 large onions, thinly sliced
3 tablespoons butter
3 tablespoons all-purpose flour
2 cups milk
1 cup heavy cream
2 cups shredded cheddar cheese
1 teaspoon garlic powder
1 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon paprika
Butter or cooking spray for greasing the baking dish

Preparing the Potatoes

Start by washing and peeling the potatoes. Russet or Yukon Gold potatoes work especially well because they become soft and creamy while baking. Slice the potatoes into thin, even rounds so they cook uniformly. A sharp knife or mandoline slicer can help create consistent slices.

Place the sliced potatoes into a bowl of cold water while preparing the remaining ingredients. This helps remove excess starch and prevents the potatoes from browning. Before layering the casserole, drain the potatoes well and pat them dry with paper towels.

Cooking the Onions

Heat a large skillet over medium heat and melt the butter. Add the sliced onions and cook slowly, stirring occasionally. The onions should soften and develop a golden color without burning. This process may take about 10 to 15 minutes, but it adds incredible sweetness and depth to the dish.

Once the onions are soft and lightly caramelized, remove them from the heat and set them aside.