Heat oven to 350°F. In 12-inch nonstick skillet, cook beef and onion over medium-high heat 5 to 7 minutes, stirring occasionally, until thoroughly cooked; drain. Reserve 1/4 cup enchilada sauce; set aside. Add remaining enchilada sauce, corn and chiles to beef mixture. Stir in cumin and chili powder. Reduce heat to medium-low; simmer uncovered 5 minutes.