CLEAN EATING KITCHEN
In a medium skillet, heat the oil over medium heat. Add the onion and bell pepper and cook for 3-4 minutes, or until the vegetables have softened.
Turn off the heat on the stovetop and stir in the ground cumin, chili powder, and salsa.
Use a spatula to transfer the vegetable and salsa mixture to the top of the baking dish. Bake the casserole for 15 minutes.
When the casserole is done baking, remove it from the oven. Use your hands to break the tortillas chips into bite-sized pieces and spread them on top of the casserole.