"This is a great vegetarian recipe if you like butternut squash and Mexican food. It is a interesting blend of flavors that work well together, perfect for dinner parties and potlucks. It can be prepared ahead of time and frozen so that all you need to do is pop it in the oven."
Preheat oven to 350 degrees F (175 degrees C). Pierce butternut squash flesh several times with a fork and place face-down on a greased baking sheet.
Bake in the preheated oven until tender, about 45 minutes. Scoop squash flesh from skin.
Heat oil in a skillet over medium heat; cook and stir onion and garlic until onions are soft, 5 to 10 minutes. Mix cumin, coriander, and cayenne into onion mixture. Add squash, black beans, and 1/2 of the Cheddar cheese; cook and stir until heated through.
Pour a thin layer of enchilada sauce into an 11x7-inch baking dish. Pour the remaining enchilada sauce into a large dish with sides. Dip both sides of each tortilla into enchilada sauce. Fill tortillas with sweet potato mixture and roll tortilla around the filling. Place rolled tortillas, seam-side down, in the baking dish. Repeat with remaining tortillas and sweet potato mixture; top with remaining Cheddar cheese. Cover dish with aluminum foil.
Bake in the oven until heated through and cheese is melted, about 40 minutes.