- Preheat oven to 375°F and spray a 9x13-inch baking dish with cooking oil. 
- In a bowl, combine taco seasoning with pinto beans and mix well. 
- Spread a generous layer of enchilada sauce in the bottom of the prepared baking dish. 
- Layer 4 corn tortillas over the sauce. 
- Add the seasoned pinto beans, sprinkle with green onions, and top with 1/3 of the shredded cheese. 
- Add half of the diced green chiles and pour more enchilada sauce over the layer. 
- Place 4 more tortillas on top, add all the cooked rice, another 1/3 of the cheese, and remaining green chiles. 
- Pour more enchilada sauce over the rice layer. 
- Top with final 4 tortillas, remaining enchilada sauce, and rest of the cheese. 
- Cover with foil and bake for 30 minutes. 
- Remove foil, top entire casserole with Fritos corn chips, and bake uncovered for 15-30 minutes until bubbly and browned.