I saw this on Sweet Treats and More. It was really good. When I warmed it up the next day I had to take the Fritos off the top because they were soggy. I probably would just leave those off and add them before serving.
source: What's For Dinner?
1 lb. lean ground beef
1 can (16 oz) chili beans (I just used a can of chili because I didn't have just chili beans)
1 can (8 oz) tomato sauce
1 can (15 oz) diced tomatoes
1 envelope taco seasoning
1 cup shredded cheddar cheese
3 1/2 cups corn chips (Frito's)
1 1/4 cup sour cream
Directions: Cook ground beef until meat is browned; drain. Stir in beans, tomato sauce, taco seasoning mix and 1/4 c. of cheese. Sprinkle 1 cup corn chips in bottom of 8x8 baking dish or 9x13 dish. Cover with chili. Bake at 350 for 20 minutes. Spread sour cream over chili. Top with remaining corn chips and cheese. Bake 4-5 minutes longer. Makes 6 to 8 servings