Smoky Sweet Potato & Black Bean Casserole

Ingredients

• Cooking spray or olive oil
• tablespoons olive oil
• medium yellow onion, diced
• pounds sweet potatoes, peeled and cut into 1/2-inch cubes
• can fire-roasted diced tomatoes, drained of juices
• can black beans, drained and rinsed
• shredded smoked mozzarella cheese , divided
• tablespoon smoked paprika
• tablespoon kosher salt
• garlic, minced
• Plain yogurt
• Coarsely chopped fresh cilantro