Spicy Chipotle Black Bean Soup with Crispy Sweet Potato “Croutons”

Ingredients

• 1 Tbsp extra virgin olive oil
• 1 cup finely chopped yellow or white onion (about 1 medium onion)
• 4 garlic cloves, finely minced
• 1 chipotle pepper in adobo sauce, minced
• 2 tsp adobo sauce
• 1 tsp ground cumin
• 1/4 tsp cayenne pepper, or more to taste
• 2 (15 oz) cans black beans, rinsed and drained
• 1 (15 oz) can fire-roasted diced tomatoes with green chiles, undrained
• 2 cups low-sodium vegetable or chicken broth
• Kosher salt and freshly ground black pepper, to taste
• 1/2 Tbsp freshly squeezed lime juice
• 1/2 avocado, peeled, pitted, and diced
• chipotle hot sauce, optional
• 2% plain Greek yogurt, optional