Taco Filling

1 pound ground beef
1 small onion, chopped
2 teaspoons chili powder
1/2 teaspoon leaf oregano
1/2 teaspoon paprika
1/2 teaspoon salt
2 tablespoons taco seasoning mix
1 1/2 teaspoons Worcestershire sauce
1 (8 ounce) can tomato sauce
10 to 12 taco shells
Taco sauce
Shredded lettuce
Shredded Cheese

Brown beef and drain well; place in crockette. Add remaining ingredients except taco shells, taco sauce and lettuce. Cover and cook for 8-12 hours.

Fill taco shells, top with sauce, lettuce and cheese.