Preheat your oven to 375°. Lightly spray or grease a 9x13 casserole dish with olive oil.
Pour the extra virgin olive oil into a Dutch oven set to low-medium heat. Add the onions and sweet potatoes and cook for 5-7 minutes, until they just start to soften.
Add the zucchini and cook for another five minutes. The veggies should be tender, but stop cooking them before they get mushy.
Stir in the minced garlic and all of the spices and seasoning. Let that cook for 2 minutes.
Pour in the black beans, corn, and enchilada sauce. Continue cooking for 5 more minutes while the corn thaws and the flavors blend.
Grab your 9x13 pan and coat the bottom with a few spoonfuls of liquid from the veggie mixture.
Time to start layering! Arrange 6 tortillas in the pan, evenly spread out 1/3 of the veggie mixture, and sprinkle on 1/3 of the cheese. Repeat this two more times: tortillas, veggies, cheese. Tortillas, veggies, cheese.
Put the pan in the middle rack of the oven and let it bake for 15-20 minutes. The cheese should be completely melted, but leave it in the oven longer if you like toastier cheese.
Cut into squares and enjoy!