baby back ribs recipe

2 racks of baby back ribs - 1/4 cup brown sugar - 2 tablespoons smoked paprika - 1 tablespoon black pepper - 1 tablespoon salt - 1 tablespoon chili powder - 1 tablespoon garlic powder - 1 tablespoon onion powder - 1 teaspoon cayenne pepper - 1 cup barbecue sauce 2 racks of baby back ribs - 1/4 cup brown sugar - 2 tablespoons smoked paprika - 1 tablespoon black pepper - 1 tablespoon salt - 1 tablespoon chili powder - 1 tablespoon garlic powder - 1 tablespoon onion powder - 1 teaspoon cayenne pepper - 1 cup barbecue sauce