Quick Mexican Casserole

6 oz Fritos chips

1-15 oz can chili beans

1-15 oz can enchilada sauce

1-8 oz can tomato sauce

1 Tb minced onion (dried)

¹/₂ lb grated cheese

1-8 oz sour cream

Mix all together except sour cream and part of cheese.  Bake at 350° for 30 minutes.  Remove from oven and spread sour cream over top.  Sprinkle remaining cheese.  Return to oven for 10 minutes.