Start by dicing the small yellow onion and mincing the garlic cloves. These simple ingredients lay the foundation for your soup’s rich flavor.
Add the diced onion, minced garlic, rinsed and drained black beans, vegetable broth, enchilada sauce, diced tomatoes with juice, drained corn, chopped green chiles, fresh lime juice, cumin, chili powder, salt, and black pepper into your slow cooker. Give everything a good stir to combine.
Cover your slow cooker and cook on low for 6 to 8 hours, or on high for 3 to 4 hours. The longer the soup simmers, the deeper the flavors will develop.
About 15 minutes before serving, stir in the chopped cilantro. Taste and adjust salt or lime juice if needed for a bright, balanced finish.
Ladle the soup into bowls and add your favorite toppings like creamy avocado slices, shredded cheese, crunchy tortilla chips, chopped green onions, or a dollop of sour cream. Enjoy warm!