In a large skillet, heat the canola oil over medium heat. Add the ground beef and chopped onion. Cook until the beef is browned and the onions are tender, about 6-7 minutes. Tip: Stir frequently to ensure even cooking.
Stir in the taco seasoning mix and the diced tomatoes with green chiles. Bring the mixture to a simmer and cook until thickened, about 2-3 minutes, stirring constantly. Add the rinsed pinto beans and drained corn to the skillet.
Layer the corn chips in a greased 13 x 9-inch baking dish. Spoon the taco meat mixture evenly on top. Sprinkle with the shredded cheese.
Bake in the preheated oven until the cheese is bubbly and golden, for about 15-20 minutes.
Serve hot with your choice of toppings like sliced green onion, black olives, pico de gallo, sour cream, avocado, guacamole, and jalapenos. Tip: Encourage everyone to customize their servings for a fun dining experience!
Notes
Customize your taco casserole with your favorite toppings for a delicious and satisfying meal.