Preheat oven to 400°F. Place sweet potato on a baking sheet or sheet of aluminum foil and roast for 40–60 minutes, or until tender and beginning to caramelize. Allow to cool slightly.

Meanwhile, heat olive oil in a large skillet over low heat. Add onion and stir to coat. Allow onion to slowly caramelize, stirring occasionally. (On my stove, it takes about an hour to caramelize onions, although other people have told me it takes them 30 minutes—use your best judgment here!)

When onion is almost caramelized, stir in crumbled chorizo. Continue to cook for 6–8 minutes, or until chorizo is beginning to brown. Add chopped kale and cover. Cook until kale is bright green and wilted, approximately 5 minutes more. Remove from heat.

Remove sweet potato skin and mash insides in a small bowl. Season with salt and pepper.

Combine rice, lime juice, cilantro, and salt in another bowl.

In another bowl (last one, I promise!), stir together black beans and paprika until beans are coated.

To assemble, divide vegetable and chorizo mixture, rice, sweet potatoes, beans, and salsa among 4 tortillas. If you don't know how to wrap a burrito, follow these handy dandy instructions.