Beef Tacos

1 lb. ground beef
1 small onion
1 clove garlic
1 can green chillies (4 oz)
1 can tomato sauce (8 oz)
1/2 t. chilli powder (optional)
salt and pepper
Brown meat and onions together and cook until onion is tender. Add chillies and garlic and cook another 2 minutes. Add the rest of the ingredients and simmer for a few minutes. Place in folded fried corn tortillas. Serve with shredded cheese, raw onions, shredded lettuce, diced tomatoes and avocado slices.