Prepare macaroni and cheese as directed on package. Meanwhile, in the electric skillet, brown ground meat, and onion; drain. Stir in frozen vegetables, ketchup, water, mustard, and garlic powder. Cook over medium heat (250 degrees) for 8-10 minutes or until vegetables are crisp- tender, stirring occasionally.

Reduce heat to low (175 degrees). Stir in Cheddar cheese. Add macaroni-cheese to meat mixture; mix well. Cook 1-2 minutes or until thoroughly heated. Sprinkle with additional Cheddar cheese if desired. Yields: 4 (1 cup) servings