1 spray(s) cooking spray
1 medium uncooked onion(s), finely chopped
4 clove(s) (medium) garlic clove(s), minced
45 oz canned black beans, undrained, divided (three 15 oz cans)
1/2 tsp red pepper flakes, or to taste
1 tsp Durkee ground cumin, or other brand
14 1/2 oz fat-free chicken broth, or vegetable broth
10 oz canned tomatoes with green chilis, such as Rotel Tomatoes
11 oz canned yellow corn, drained