01 - Heat oven to 425°F and line a baking sheet with parchment paper.
02 - Combine diced sweet potatoes and red onion in a large bowl. Toss with olive oil, cumin, smoked paprika, chili powder, salt, and black pepper until evenly coated.
03 - Spread the seasoned vegetables on the prepared baking sheet. Roast for 25 to 30 minutes, stirring halfway through, until softened and golden.
04 - In a skillet over medium heat, sauté minced garlic for 1 minute. Add black beans and roasted vegetables, cooking for 2 to 3 minutes while stirring gently.
05 - Heat tortillas in a dry skillet or microwave until flexible and warm.
06 - Divide the sweet potato and black bean mixture evenly among the tortillas. Top with grated cheese, chopped cilantro, and a splash of lime juice.
07 - Add optional toppings as desired. Fold in the sides and roll the burritos tightly.
08 - Toast burritos seam-side down in a skillet for 2 to 3 minutes for a crispy exterior, if preferred.
09 - Serve immediately with extra salsa, sour cream or yogurt, and lime wedges.