1 1/2 pounds fresh collard greens, tough stems removed and chopped
42 ounces no-salt-added diced tomatoes (see note)
1 chipotle pepper in adobo sauce
4 ounces no-salt-added tomato paste
6 cups cooked pinto beans or 4 (15 ounce) cans no-salt-added or low sodium pinto beans, drained
1 teaspoon garlic powder