Cheeseburger Quiche

Cheeseburger Quiche 1 deep dish pie shell (9 inch) 1 lb ground beef 1⁄3 cup chopped onion 4 eggs 1⁄2 cup mayonnaise 1⁄2 cup skim milk 2 tablespoons flour 1⁄4 teaspoon dried oregano 1⁄2 teaspoon salt 1⁄4 teaspoon fresh black pepper 6 ounces sharp cheddar cheese, shredded, divided Preheat the oven to 350°F. In a skillet, brown ground beef and onion; drain and set aside. In a bowl, beat the eggs, then whisk in the mayo, milk, flour, oregano, salt and pepper. Stir in beef mixture and 1 cup cheese. Pour mixture into pie shell. Bake for 40-45 minutes until eggs are firm. Remove from oven and sprinkle with remaining cheese. Allow to stand for 5 minutes before cutting.