Preheat oven to 425 F. On a large baking sheet, toss sweet potatoes with 1-2 tsp of oil and taco seasoning. Roast until tender, tossing halfway through, for 25-30 minutes.
Once cooked, assemble bowls with cooked American sweet potato cubes, chopped kale, black beans, corn, quinoa, and cherry tomatoes. Serve with salsa and vegan sourcream, along with sliced limes.