Texas Black Bean Soup

2 cans (15 ounces each) black beans, rinsed and drained
1 can (14-1/2 ounces) stewed tomatoes or Mexican stewed tomatoes, cut up
1 can (14-1/2 ounces) diced tomatoes or diced tomatoes with mild green chiles
1 can (14-1/2 ounces) chicken broth
1 can (11 ounces) Mexicorn, drained
2 cans (4 ounces each) chopped green chiles
4 green onions, thinly sliced
2 to 3 tablespoons chili powder
1 teaspoon ground cumin
1/2 teaspoon dried minced garlic

In a slow cooker, combine all ingredients. Cover and cook on high for 4-6 hours or until heated through.