Prepare the oven and preheat it to 350 degrees F. Also, prepare a 9x9 baking dish by lining it with parchment paper.

Add the canned chili, onion, and Jalapeno in a saucepan over medium heat and cook until everything is hot. Remove from the stove and spread half of the mixture in the bottom of the prepared baking dish.

Add an even layer of Fritos to the chili mixture layer, then sprinkle half of the cheese.

Repeat the process with another layer of chili mixture, Fritos, and cheese, respectively.

Place the baking dish in the oven and bake for 25 to 30 minutes or until the cheese on the top melts and bubbles appear on the edges.

Remove from oven and leave to cool for 10 minutes. Serve and enjoy!