How to Make It
Coat a large nonstick skillet with cooking spray; place over high heat until hot. Add ground round and onion; cook 5 minutes until meat is browned and onion is tender, stirring to crumble meat. Add chiles, taco seasoning, and tomato sauce, stirring well. Cook over medium heat 3 to 4 minutes or until thoroughly heated, stirring often.
Spoon meat mixture evenly over bottom halves of buns; top with remaining bun halves.
501 Delicious Heart Healthy Recipes