Heat a large Dutch oven over medium-high heat. Coat pan with cooking spray. Add onion, pancetta, and garlic; sauté 5 minutes or until pancetta browns. Stir in kale, pepper, and salt. Add beans and broth; bring to a boil. Cover, reduce heat, and simmer 15 minutes or until kale is tender. Uncover and cook 10 minutes or until liquid almost evaporates.