Heat the oven to 350°. Coat a baking sheet with cooking spray.
In a medium bowl, combine all the ingredients and stir well. Working with 1 tablespoon at a time, form the mixture into 1 1/2-inch balls, arranging them on the prepared baking sheet.
Bake the meatballs until they reach 160° at the center, about 15 minutes. Brown them under the broiler for about 5 minutes. Serve them warm.