Crumble ground beef or turkey into a glass casserole dish. Add 1/4 cup onion. Microwave at high setting for 3 minutes.
Stir to break up meat. Pour or drain off excess fat from meat. Stir in refried beans, taco sauce, salt and garlic powder, and set aside.
Wrap a stack of 6 tortillas in plastic wrap. Microwave at high setting 1 1/2 minutes or until soft. Repeat for remaining 6 tortillas.
Place generous portion of meat mixture on each tortilla and roll up. Pour half of the sauce into bottom of a glass baking dish. Place filled tortillas seam side down into the sauce in baking dish. Pour remaining sauce over tortillas. Cover with wax paper or plastic wrap.
Microwave at high setting 9 minutes or until hot. Sprinkle with cheese. Microwave at high setting for 2 minutes more, or until cheese in melted. Serve with shredded lettuce, reduced-fat sour cream and spicy salsa!