Cheesy Apple and Sausage Pie Recipe

Ingredients

• 1 basic pie dough recipe, rolled out and lining a 9 or 10-inch pie dish, or 8x8 baking dish, chilled (or one frozen pie crust)
• 2 large tart green apples, peeled and sliced 1/4-inch thick
• 1/2 medium onion, chopped (about half a cup)
• 1 teaspoon sugar
• 3 tablespoons butter
• 3/4 pound sweet Italian sausage (bulk, or removed from casings)
• 1 clove garlic, minced
• 2 cups (8 ounces) shredded fontina, provolone, and or asiago cheese
• 1 cup ricotta cheese
• 1/4 cup feta cheese
• 2 eggs, slightly beaten