Potato Apple Gratin

By LadyRev-2

Ingredients

• 3 eggs
• 3 cups buttermilk
• 1 tablespoon fresh thyme leaves
• 2 teaspoons kosher salt
• 1/8 teaspoon freshly ground pepper
• 2 pounds baking potatoes, peeled and cut into 1/8-inch slices
• 2 pounds Granny Smith apples (unpeeled), cut into 1/8-inch slices
• 1 pound Swiss cheese, shredded
• 1/4 pound Parmesan, grated

Details

Servings 10

Preparation

Step 1

Heat oven to 400° F.

Coat a 3 1/2-quart casserole with cooking spray. In a medium bowl, whisk together the eggs, buttermilk, thyme, salt, and pepper; set aside.

Arrange a layer of slightly overlapping potatoes in the casserole. Cover with a layer of apples and sprinkle with a third of each cheese. Pour a third of the egg mixture on top. Make 2 more layers.

Bake, covered, 1 hour, 15 minutes. Remove cover and bake another 15 minutes or until the potatoes are tender. Remove from oven. Serve warm or at room temperature.