# The Ingredients You'll Need:
→ Vegetables
01 - 2.6 pounds potatoes, peeled and thinly sliced
02 - 1 large onion, thinly sliced
→ Dairy
03 - 3/4 cup plus 2 tablespoons whole milk
04 - 2/3 cup heavy cream
05 - 1 cup grated cheddar cheese
06 - 2 tablespoons unsalted butter, plus extra for greasing
→ Pantry
07 - 2 cloves garlic, minced
08 - 1 teaspoon salt
09 - 1/2 teaspoon black pepper
10 - 1/4 teaspoon ground nutmeg (optional)
→ Optional Toppings
11 - 2 tablespoons chopped fresh parsley (for garnish)
# Step-by-Step Instructions:
01 - Preheat the oven to 375°F. Grease a medium baking dish with butter.
02 - Melt the butter in a small saucepan over medium heat. Add minced garlic and cook for 1 minute until fragrant.
03 - Stir in whole milk, heavy cream, salt, black pepper, and nutmeg into the butter-garlic mixture. Heat gently until warmed through without boiling. Remove from heat.
04 - Arrange half of the potato slices in the prepared dish. Top with half of the sliced onions and half of the grated cheddar cheese.
05 - Lay remaining potatoes, onions, and cheese over the first layers.
06 - Pour the warm milk and cream sauce evenly over the layered ingredients.
07 - Cover the dish tightly with aluminum foil and bake for 40 minutes.
08 - Remove the foil and bake for an additional 20 minutes until the top is golden and potatoes are tender.
09 - Allow to rest for 5 minutes before serving. Garnish with chopped parsley if desired.
