1Heat oven to 400°F. Spray 13x9-inch (3-quart) glass baking dish with cooking spray.
2In 3-quart saucepan, heat ham, barbecue sauce, onion and beans over medium-high heat, stirring occasionally, until thoroughly heated. Pour into baking dish.
3In large bowl, stir 2 pouches muffin mix, milk, butter and eggs just until moistened (batter will be lumpy). Spread over ham and bean mixture to edges of dish.
4Bake uncovered about 20 minutes or until toothpick inserted in center comes out clean and cornbread is golden brown.