12 tostada shells
1 lb. boneless chicken or ground beef
1/4 c. chopped onion
2 tbsp. butter
1 (16 oz.) jar salsa
1 pkg. taco seasoning
1 can refried beans, heated
3 c. shredded lettuce
3 med. tomatoes, chopped
3 c. shredded Cheddar cheese

Heat tostada shells at 350 degrees for 5-7 minutes. Cook chicken and onions or beef until browned. Drain. Add salsa and seasoning mix. Reduce heat and simmer uncovered for 10 minutes. Put 1 tablespoon beans on each shell. Spoon on approximately 1/2 chicken or beef mixture. Top with lettuce, tomatoes and cheese.