1 cup cheddar cheese, grated
Sea salt and white pepper
1 tablespoon butter
2 cooking apples, peeled, cored, sliced lengthwise into 1/8-inch-thick pieces
Optional: 2-3 slices cooked, crumbled bacon
Preheat oven to 450 degrees. Whisk together the eggs, half the cheese, bacon, if using, and salt and pepper to taste. In a medium cast iron skillet, heat butter over medium heat and swirl to coat the sides of the pan. Pour in egg mixture. While it cooks, 1 to 2 minutes until edge is set, arrange apples on top in a circular pattern, starting from the outside edge, and sprinkle with remaining cheese. Place skillet in oven. Bake until frittata is set in the center and cheese is browned, about 15 - 20 minutes. Loosen edges with a spatula and release frittata onto a cutting board. Cut into wedges. Serve hot.
Apples that would work well for this recipe: gala, granny smith, braeburn. Almost any apple except red delicious, which is best eaten raw.