Heat oven to 400°F. Spray 9-inch glass pie plate with cooking spray. In 10-inch skillet, cook bacon over medium-high heat 5 to 7 minutes, turning once, until crisp; drain on paper towels. Crumble bacon; set aside. In same skillet, cook beef, pepper and onion over medium-high heat 5 to 7 minutes, stirring occasionally, until beef is thoroughly cooked; drain. Stir in ketchup. Spread in pie plate; sprinkle with cheese and bacon. In medium bowl, stir remaining ingredients with wire whisk or fork until blended. Pour into pie plate. Bake 20 to 25 minutes or until knife inserted in center comes out clean. Serve with additional ketchup if desired.