Heat oven to 350°F. In 10-inch skillet, cook bacon over medium-high heat 10 to 12 minutes or until bacon is crisp; remove from pan to paper towels, and crumble. Remove all but 1 tablespoon bacon drippings from skillet. Add onion to skillet; cook and stir about 2 minutes or until onion is tender. In small bowl, mix onion and bacon. Set aside.