Preheat oven to 400. Cook sausage, onion, and pepper in a skllet until sausage is brown and crumbly. Stir in flour. Mix in next 4 ingredients. Remove from heat and stir in cheese and olives. Spread evenly in a 9 inch square pan, sprayed with vegetable spray. Prepare muffin mix according to package directions; spread over sausage. Bake 30 to 35 minutes. Let stand in pan 5 minutes; loosen edges. Invert onto plate. Serve immediately.