Casserole:
2 tablespoons olive oil
1/2 cup chopped yellow onion
1/2 teaspoon cumin
1/2 teaspoon granulated garlic
1/2 teaspoon dried oregano
1 chipotle pepper in adobo sauce, finely chopped, plus 1 teaspoon adobo sauce
1 teaspoon tomato paste
Freshly ground black pepper
1 pound lean ground turkey
One 15-ounce can low-sodium black beans, rinsed and strained
One 15-ounce can no-salt-added diced tomatoes
1/2 cup low-sodium chicken broth
1/2 cup grated Parmesan
1 cup instant polenta
3/4 cup shredded Cheddar
1 tablespoon sliced pickled jalapenos, strained and chopped
Cooking spray

Toppings:
1 cup nonfat Greek yogurt
1 avocado, diced
1/2 cup chopped fresh cilantro
1 cup cherry tomatoes, quartered