4 (6 1/2 oz.) cans Premium white chicken
1 (2 lb.) Velveeta cheese
1 med. onion
1 can Ro-Tel tomatoes
1 can cream of mushroom soup
1 1/2 c. grated Cheddar cheese
1 bag tortilla chips

Melt Velveeta cheese in double boiler, add chicken and next 3 items. Stir until well blended. On the bottom of a 9 x 13 inch baking dish, crush chips; pour cheese mixture over chips. Add crushed chips and Cheddar cheese on top. Bake at 350 degrees for 30 minutes.