Cook bacon in a skillet over medium heat until crisp; remove and drain on paper towels, reserving 2 tablespoons drippings in skillet. Crumble bacon.
Sauté diced onion in hot bacon drippings in skillet over high heat 5 minutes or until tender. Stir together onion, crumbled bacon, beans, and remaining ingredients in a lightly greased 1-quart baking dish.
Bake beans, uncovered, at 400° for 55 minutes or until sauce is thickened.