Best Cocktail Meatballs

Preheat oven to 350º and line a large baking sheet with parchment paper. In a large bowl, stir together ground beef, eggs, breadcrumbs, onion, and parsley. Season with salt and pepper.  Form 16 meatballs, about 1" to 2" in diameter. Place in an even layer on prepared baking sheet and bake 10 minutes. Flip meatballs and bake 10 minutes more, until golden. Meanwhile, make sauce: in a large skillet over medium heat, combine cranberry sauce, barbecue sauce, chili sauce, vinegar, and Worcestershire sauce. Whisk until smooth and season with red pepper flakes and salt. When mixture is smooth, add meatballs to skillet. Cook, basting with the sauce, until sauce is thickened and coating meatballs. Garnish with parsley and serve.