Hearty Sweet Potato Kale Soup with Black Beans
A warming vegetarian soup that balances earthy sweet potatoes with nutrient-dense kale and protein-rich black beans. Aromatic spices like cumin and oregano create a Southwestern-inspired flavor profile, while lime juice adds brightness. The combination of tender sweet potatoes and hearty kale makes this soup satisfying enough for dinner yet light enough for lunch. Greek yogurt and radish garnishes provide creamy coolness and crisp texture contrast. Perfect for meal prep or feeding a crowd on busy weeknights.
Ingredients
- 1 large yellow onion, diced
- 4 medium garlic cloves, minced
- 1 15-ounce can black beans, drained and rinsed
- 2 tablespoons olive oil
- 2 teaspoons dried oregano
- 1 ½ teaspoons cumin
- 1 teaspoon garlic powder
- ½ teaspoon black pepper
- ⅛ teaspoon cayenne(optional)
- ½ teaspoon kosher or sea salt
- 1 pound sweet potatoes, diced (3 cups cubed)
- 1 quart vegetable broth
- 4 cups kale, chopped
- 3 green onions, thinly sliced
- 2 radishes, thinly sliced
- 1 tablespoon lime juice
- 6 tablespoons plain Greek yogurt(optional)
- hot sauce(optional)
Instructions
- 1
Dice the onion
- 2
Mince the garlic
- 3
Dice the sweet potato
- 4
Drain and rinse the beans
- 5
Heat olive oil in large pot over medium high heat
- 6
Add onions and saute 4 minutes until translucent
- 7
Reduce heat to medium and add garlic, oregano, cumin, garlic powder, black pepper, and cayenne
- 8
Saute for 30 seconds
- 9
Stir in sweet potatoes
- 10
Add vegetable broth, beans, and salt
- 11
Bring to a simmer
- 12
Reduce to simmer and cook 15 minutes until sweet potato is tender
- 13
Roughly chop the kale
- 14
Thinly slice the green onions and radishes
- 15
Remove from heat when sweet potatoes are tender
- 16
Stir in kale, green onions, and lime juice
- 17
Allow to cool slightly
- 18
Taste and adjust salt if needed
- 19
Serve garnished with radishes, Greek yogurt, and hot sauce
Tips
Prep all vegetables before cooking to streamline the process since aromatics cook quickly
Adjust cayenne pepper to taste - start with less and add more for heat preference
Let soup cool slightly before serving to allow flavors to meld and prevent burning tongues
Good to Know
Refrigerate up to 4 days in airtight container
Can be made 1 day ahead - add kale when reheating
Serve immediately while hot with garnishes on the side
Common Mistakes
Dice sweet potatoes uniformly to avoid uneven cooking
Add kale at the end to avoid overcooking and maintain color
Taste and adjust salt after adding lime juice as acidity affects saltiness perception
Substitutions
Dairy-Free Swaps
Vegan Options
General Alternatives
FAQ
Can I make this soup vegan?
Yes, simply omit the Greek yogurt garnish or substitute with coconut cream for a plant-based option.
What if I don't have fresh kale?
Frozen kale works well - add it directly to the hot soup without thawing and cook briefly until heated through.
How long does this soup keep in the freezer?
Freeze for up to 3 months in freezer-safe containers, though texture may be slightly softer after thawing.