Preheat oven to 400 degrees.
In a large bowl, combine sweet potato, onion, oil, and spices (salt through crushed red pepper flakes). Toss to mix well, and transfer to a parchment lined baking sheet. Bake for 20 to 25 minutes or until sweet potato is fork tender.
While sweet potato roasts, prep the rest of the food! In a small pot, combine beans, corn, and chilis. Season lightly with salt if needed, and keep on stove until it’s thoroughly heated through.
Once sweet potato is done. Assemble burritos!
In a tortilla, layer the sweet potato, bean mixture, rice, avocado, and salsa. Tuck in both ends, roll, and enjoy!