Step 1: Preheat the Oven
- Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or non-stick spray.
Step 2: Prepare the Creamy Sauce
- Make the roux: In a medium saucepan, melt the butter over medium heat. Add the flour and whisk for 1-2 minutes, until lightly golden and bubbly.
- Add milk and cream: Gradually whisk in the milk and heavy cream, stirring constantly to avoid lumps. Cook until the sauce thickens, about 3-5 minutes.
- Season the sauce: Add salt, pepper, and garlic powder (if using), and stir in half of the shredded cheddar cheese. Continue whisking until the cheese melts and the sauce is smooth.
Step 3: Layer the Potatoes
- Arrange the potatoes: In the prepared baking dish, arrange a layer of sliced potatoes, slightly overlapping each other. If using onions, sprinkle a small handful of chopped onions between the layers.
- Pour sauce: Pour a portion of the cheese sauce over the first layer of potatoes, spreading it evenly with a spoon. Repeat the process with additional layers of potatoes and sauce until all the ingredients are used.
Step 4: Top and Bake
- Top with cheese: Sprinkle the remaining shredded cheddar and Parmesan cheese over the top of the layered potatoes.
- Bake: Cover the dish with aluminum foil and bake for 45 minutes. Remove the foil and continue baking for an additional 25-30 minutes, or until the potatoes are tender and the top is golden brown.
Step 5: Serve
- Cool and garnish: Let the scalloped potatoes rest for about 10 minutes before serving to allow the sauce to set. Garnish with fresh parsley or chives, if desired.
Tips:
- Even slicing: Use a mandoline for thin, uniform slices to ensure the potatoes cook evenly.
- Cheese options: For a more complex flavor, try adding Gruyère, Monterey Jack, or a sharp cheddar to the sauce.
- Extra flavor: Add cooked bacon bits or a sprinkle of smoked paprika for added depth and a savory kick.
Conclusion:
These Scalloped Potatoes are creamy, cheesy, and the perfect accompaniment to any meal. Their rich texture and golden-brown crust make them an irresistible dish that’s easy to love. Enjoy this classic comfort food, and don’t be surprised if it becomes a regular feature on your menu!