Taco Casserole

1 package (6 ounces) corn chips
1 pound hamburger or ground turkey
1 package taco seasoning
1 can (35 ounces) refried beans
1/2 to 1/3 jar (8 ounces) mild taco sauce
1 cup shredded lettuce
2 chopped big tomatoes
1 cup grated cheddar cheese

Crush 3/4 package of the corn chips. Put on the bottom of a casserole dish. Brown the hamburger or ground turkey; drain off the fat. Add taco seasoning and mix according to the package directions. Add refried beans, taco sauce, and heat through. Pour over the crushed corn chips. Top with cheese and the rest of the corn chips. Heat at 325 degrees for 20 minutes or until cheese melts. Add lettuce and tomatoes the last 10 minutes of baking time.