1/2 lb. ground beef
1 can (15 1/2 oz.) refried beans
1 can (8 oz.) tomato sauce
1 pkg. (1 1/4 oz.) taco seasoning mix
1 sm. onion, finely chopped
1/2 tsp. dry mustard
1/2 tsp. chili powder
1 c. sour cream
Cheddar and Monterey Jack cheese
Lettuce

Brown and drain ground beef in 10 inch skillet. Stir in and heat to boiling the refried beans, tomato sauce, taco seasoning mix, onion, dry mustard and chili powder.

Spread on big oven-proof plate. Top with sour cream. Sprinkle on grated cheeses and melt under broiler. Top with lettuce and serve with taco chips.