A dollop of Greek yogurt on black bean soup adds creaminess and a protein boost. This fiber-rich lunch is cheap to make and freezes beautifully in batches.
Heat the olive oil in a large soup pot over medium heat. Add the chopped onion, carrot, celery, and red bell pepper; cook for about 7 minutes, stirring occasionally, until the vegetables are softened and onions are translucent.
Add the minced garlic, ground cumin, chili powder, and smoked paprika. Stir and cook for 1 minute more, letting the spices bloom while being careful not to burn the garlic.
Pour in the vegetable broth and add the drained black beans. Increase heat to bring to a simmer, then reduce to low, cover, and cook for 20 minutes, stirring occasionally to prevent sticking.
Uncover and use an immersion blender to puree part of the soup in the pot (or transfer 2 cups to a blender and pulse), leaving some beans and vegetables whole for a rustic texture.
Stir in salt, black pepper, and lime juice. Adjust seasoning to taste. Serve hot, garnished with a generous dollop of Greek yogurt in each bowl.