Mexican Subs - cooking recipe

Ingredients

1 1/2 lb. lean round steak
1 large sliced onion
1 sliced green pepper
1 sliced red pepper
1 can tomato puree
1 pkg. taco seasoning mix
1/2 lb. lean ground hamburger, browned and drained

Preparation

Combine all ingredients in crock-pot and cook on low 6 hours or until meat is very tender.
Serve on large sandwich rolls with mayonnaise and Mozzarella cheese. Also good served rolled up in soft tortilla shells.