In large skillet, brown ground beef and onions until beef is no longer pink in the center. Drain off any grease. Add refried beans, chiles, taco seasoning, cilantro, 1/2 of the salsa, and tomato sauce. Stir and place over medium high heat, stirring constantly, until bubbly, about 4-5 minutes. Remove from heat and stir in corn and black beans.