1 large sweet potato, peeled and cubed
1 pound ground turkey breast
1 large egg
1 small sweet onion, finely chopped
2 cloves garlic, minced
1/4 cup honey barbecue sauce
1/4 cup ketchup
2 tablespoons Dijon mustard
2 slices whole-wheat bread, torn into small crumbs
1 tablespoon freshly ground black pepper, or to taste
1 tablespoon salt, or to taste