Ingredients
Equipment
Method
Step-by-Step Instructions
- Preheat your oven to 375°F (190°C) and grease a 9x13-inch baking dish with unsalted butter.
- In a medium saucepan, melt 4 tablespoons of butter over medium heat. Stir in ¼ cup of flour to create a roux and cook for 1 minute.
- Gradually whisk in 1 cup of heavy cream and 1 cup of milk, stirring for 3 to 5 minutes until thickened. Season with garlic powder, salt, pepper, and paprika.
- Thinly slice 4 to 5 russet potatoes and layer half in the greased baking dish, followed by half of the onions, half of the sauce, and half of the cheese.
- Repeat the layering with the remaining potatoes, onions, sauce, and cheese.
- Cover with foil and bake for 45 minutes, then remove foil and bake for another 15 to 20 minutes until golden and bubbly.
- Let cool for 10 minutes before serving to allow the layers to set.
Nutrition
Notes
For best flavor, allow to cool before serving. Can be made ahead of time and stored in the refrigerator.
