Mexican Frito Pie

Mexican Frito Pie 1 lb. ground beef 1 med. onion, chopped 1 15.5 oz. can Chili beans 1 10 oz. can mild diced tomatoes with green chili's 1 15 oz. pkg. taco seasoning 1 pkg. Fritos chips 8 oz. shredded Colby jack cheese Brown ground beef, drain and add in onions and sauté till tender. Add in taco seasoning and diced tomatoes. Stir to combine and then add the chili beans and cook to heat through. Remove from heat and in a med. size casserole dish place a layer of hand crushed Fritos, then a layer of the meat filling top that with some cheese, repeat a second time ending with a final layer of Fritos on top. Bake at 350 degrees for 20 minutes, remove and top with a little more cheese. Return to the oven for 5 minutes longer. Serve over shredded lettuce.