Southwest Stew | The Game Changers

Name: Southwest Stew | The Game Changers
Cuisine: American, Southern
Ingredients: 6 medium white or cremini mushrooms, sliced (about 2½ cups); 1 medium yellow or white onion, chopped (about 2 cups); 1 small red bell pepper, seeded and chopped (about 1 cup); 1 tablespoon chili powder; 1 tablespoon dried oregano; 2 teaspoons granulated garlic; 2 teaspoons ground cumin; 4½ cups water; ¾ pound white potatoes, peeled and cut into ½-inch thick chunks (about 2 cups); 1 can black beans (15 ounces - about 1½ cups), drained and rinsed; 1 can cooked pinto beans (15 ounces - about 1½ cups), drained and rinsed; 1½ cups corn kernels; 1 can diced tomatoes (14.5 ounces - about 1½ cups), undrained; ⅓ cup tomato paste (half of a 6 ounce can); 4 cups coarsely chopped collard greens (or other greens); 1½ cups loosely packed cilantro, chopped (plus extra for garnish)