1 lb. ground beef
1 med. onion, chopped
1/2 to 1 c. taco sauce
1 sm. can green chilies (optional)
1 (9-inch) pie shell (uncooked)

Brown hamburger with onion. Drain. Add 1/2 to 1 cup of taco sauce and drained green chilies, if desired. Pour into pie shell and bake about 15 to 20 minutes, until shell is brown. Top with shredded cheese.