Apple Cheese Quiche

Ingredients

• 1 1/2 Tbsp. butter
• 2 (9-inch) pie shells
• 2 c. shredded Cheddar cheese
• 1 lb. mild sausage, cooked, drained and crumbled
• 2 c. peeled, sliced apples
• 1 (4 oz.) can sliced mushrooms, drained
• 4 eggs
• 1 Tbsp. all-purpose flour
• 1 tsp. salt
• 1 c. evaporated milk