Start by heating your oven to a cozy 350°F (175°C) to set the stage for baking.
Lay a crunchy foundation with three-quarters of the Fritos evenly across the base of a 9x13 inch baking dish.
In a skillet large enough to hold your dreams, cook the ground beef and onion until the meat is browned and the onions tenderly translucent. Drain any excess fat to keep things light.
Stir in the taco seasoning for a flavor fiesta, ensuring every piece of beef is happily coated.
Toss in the diced tomatoes, beans, and corn into the mix, stirring until each ingredient is well acquainted.
Gently pour this mixture over your Frito bed, smoothing it out to an even layer of deliciousness.
Crown your creation with the cheddar cheese, ensuring a cheesy blanket covers every inch.
Give your pie a quick bake for 15-20 minutes until the cheese is bubbly and the edges are crisped to perfection.
Serve hot, embellished with extra Fritos and the taco toppings you adore.