Black Bean and Butternut Squash Enchilada Casserole
1 butternut squash - peeled, halved lengthwis… 1 small onion, diced 1 teaspoon ground coriander 1 teaspoon ground cumin 12 ounces shredded Cheddar cheese, divided 2 (10 ounce) cans mild enchilada sauce 2 (15.5 ounce) cans black beans, rinsed and d… 2 pinches cayenne pepper 3 cloves garlic, minced 3 tablespoons vegetable oil 8 flour tortillas, or more if needed