Nacho Casserole

5 cups slightly crushed tortilla chips
2 cans black beans, drained (or 1 can pinto beans, 1 can black)
1 jar salsa
1 cup sour cream
1 can corn, drained
2 tbls. flour
1 cup shredded cheddar or jack cheese

Preheat oven to 350 degrees. Place 3 cups of the tortilla chips in the bottom of a greased 9x13 pan. Mix together the beans, salsa, sour cream, corn, and flour. Spoon over tortilla chips in pan and bake for about 25 minutes. Top with remaining chips and the cheese. Bake for another 5 to 10 minutes until cheese is melted. Top with extra sour cream and/or chopped cilantro for extra flavor.