1. Preheat oven to 350°. Brown sausage in a large skillet over medium-high heat, stirring often, 8 to 10 minutes or until sausage crumbles. Remove from skillet; reserve 1 Tbsp. drippings in skillet.
2. Sauté onion and bell pepper in hot drippings over medium-high heat 3 minutes or until tender. Stir together cheese, flour, sausage, onion, and bell pepper. Place piecrust shell on a baking sheet, and spoon mixture into piecrust.
3. Whisk together eggs and next 5 ingredients in a bowl until smooth; pour over sausage mixture.
4. Bake at 350° for 35 to 40 minutes or until golden brown and set.