Method:
Preheat the Oven:
- Preheat your oven to 375°F (190°C).
- Grease a 9x13-inch baking dish with butter or non-stick cooking spray.
Prepare the Potatoes and Onions:
- Wash and peel the potatoes. Slice them thinly, about 1/8 inch thick, using a mandoline or a sharp knife for uniformity.
- Peel and slice the onion thinly.
Make the Creamy Sauce:
- In a medium saucepan, melt the butter over medium heat.
- Add the minced garlic and cook until fragrant, about 1 minute.
- Stir in the flour and cook for another minute to form a roux.
- Gradually whisk in the milk and cream, ensuring there are no lumps.
- Bring the mixture to a simmer, stirring constantly until it thickens, about 5 minutes.
- Season with salt and pepper to taste.
Assemble the Bake:
- Arrange half of the sliced potatoes in an even layer at the bottom of the prepared baking dish.
- Place a layer of sliced onions over the potatoes.
- Pour half of the creamy sauce over the potatoes and onions.
- Sprinkle half of the shredded cheese over the sauce.
- Repeat with the remaining potatoes, onions, sauce, and cheese, finishing with a generous layer of cheese on top.
Bake:
- Cover the baking dish with aluminum foil and bake in the preheated oven for 30 minutes.
- Remove the foil and bake for an additional 25-30 minutes, or until the potatoes are tender and the top is golden brown and bubbly.
Serve:
- Let the potato bake cool for about 10 minutes before serving. This helps it set and makes it easier to slice.
- Garnish with fresh herbs for a touch of color and added flavor.
Tips for the Best Potato Bake:
- Uniform Slices: Ensuring the potato slices are uniform in thickness is key to even cooking. A mandoline slicer can be a great tool for this.
- Cheese Choices: Cheddar adds a sharp, tangy flavor, while mozzarella gives a gooey, melty texture. A mix of both works wonderfully.
- Season Generously: Potatoes need ample seasoning. Don’t skimp on the salt and pepper, and consider adding a pinch of nutmeg to the sauce for a subtle warmth.
- Herb Infusion: Fresh thyme, rosemary, or parsley can elevate the dish. Sprinkle some between the layers or on top before baking.
Variations:
- Add Protein: Incorporate cooked bacon, ham, or chicken to make the potato bake heartier.
- Vegetable Medley: Add layers of vegetables like spinach, mushrooms, or bell peppers for added nutrition and flavor.
- Spicy Twist: Mix in some chopped jalapeños or red pepper flakes for a bit of heat.
