Quiche With Meat

Ingredients

• 1 lb. hamburger or sausage meat or 1/2 lb. each
• 1/2 c. milk
• 1/2 c. mayonnaise
• 1 small onion, diced
• 2 (9-inch) pie crust shells
• 1 1/2 to 2 c. shredded Cheddar cheese
• 1 large jar mushrooms, chopped