Layer remaining Fritos, remaining chili, and remaining cheese. Add additional ingredients like onion, tomato, lettuce, and jalapeño as desired. Easy Frito Pie. Layer half the chili on top and half of the cheese. This Frito Pie Casserole could not be any easier. In an oven-safe serving dish, pour in FRITOS ® Original Corn Chips and spread evenly. Frito pie is an American dish popular in the Southwest for being crunchy, spicy, and cheesy. Bake at 375 degrees for 20-25 minutes or until heated through. Here’s my take using Fritos corn chips, my Chili con Carne and lots of cheese for an easy dinner twist on this crunchy, classic casserole.. Sprinkle cheese all over and pop into the oven at 350 degrees till the cheese is a little melted. Heat chili and pour evenly over corn chips. In the bottom of an 8×8 pan or similar size dish place about half of the Fritos.