Stuffed Italian Meatballs

In a medium bowl beat egg lightly with a fork. Stir in 1/3 cup of the panko, the rosemary, and garlic. Add beef and sausage; mix well. Divide mixture into 18 equal portions. Shape each portion into a ball around a piece of cheese, making sure to fully enclose the cheese.

Add remaining 2/3 cup panko to a shallow dish. Roll meatballs, one at a time, in panko until well coated. Place meatballs in a shallow baking pan. Coat meatballs lightly with cooking spray.

Bake in a 425° F oven for 10 to 15 minutes or until meatballs are cooked through (165°F). Serve warm meatballs with marinara sauce.