Brown ground beef and onions seasoned with salt and pepper and drain.

Put 1/2 can of enchilada sauce in the bottom of a 13 X 9 baking dish.

Mix the other half of enchilada sauce with ground beef mixture and add 1 1/2 cups shredded Mexican cheese.

Place small amount of ground beef mixture in each tortilla shell and roll up. Place each one in the baking dish

Top with 1 can red enchilada sauce and the remaining cheese.

Bake uncovered at 350° for 20 minutes. Garnish with diced tomatoes, lettuce and sour cream