Preheat oven to 350°. In a large skillet, cook bacon over medium heat until crisp. Using a slotted spoon, remove to paper towels. Drain, reserving 1 tablespoon drippings. In drippings, cook sausage and onion over medium-high heat until sausage is lightly browned. Stir in bacon and remaining ingredients., Transfer to an ungreased 2-qt. baking dish. Bake, uncovered, 25-30 minutes or until bubbly.