Preheat oven to 350 degrees. Coat a regular (12-cup) muffin pan with cooking spray. Since this recipe makes 9 meatloaf muffins, you’ll only fill 9, not 12. Set aside.
To make bread crumbs: Toast 1 slice whole-wheat or multi-grain bread. Place in blender and pulse until made into crumbs.
In a large bowl, add ground turkey, bread crumbs, onions, egg, Worcestershire sauce, ½ cup barbecue sauce, salt and pepper. Using your hands or a large spoon, thoroughly mix together until well blended.
Add meatloaf mixture to the 9 muffin cups, flattening out the tops. Top each meatloaf muffin with ¾ tablespoon barbecue sauce and spread evenly over top.
Bake for 40 minutes. Run a knife around each muffin to loosen it from pan. Remove to a serving plate.