Preheat the oven to 350℉.
Add the Ground Beef, onion, egg, salt, bread crumbs, garlic and parsley flakes into a bowl. Mix ingredients lightly but thoroughly (do not pack). Line a baking sheet with parchment paper. Gently shape mixture into 12 meatballs and place it on the baking sheet.
Bake in the oven for 10 minutes.
Remove meatballs from the baking sheet and place in a cast-iron skillet. Pour the marinara sauce over the meatballs and top with bocconcini balls. Bake for an additional 15 minutes and broil for 1-2 minutes.
Remove from the oven and top with basil leaves to serve.
Nutrition information per serving: – 470 Calories; 273.4 Calories from fat; 30.4 g Total Fat (14.3 g Saturated Fat; 3.5 g Monounsaturated Fat); 131.0 mg Cholesterol; 743.1 mg Sodium; 16.4 g Total Carbohydrate; 3.6 g Dietary Fiber; 32.6 g Protein; 2.8 mg Iron; 256.8 mg Potassium; 0.2 mg Riboflavin; 5.2 mg Niacin; 0.29 mg Vitamin B6; 1.9 mcg Vitamin B12; 3.6 mg Zinc; 12.6 mcg Selenium; 71.2 mg Choline.
This recipe is an excellent source of Protein, Vitamin B12, Selenium, Zinc. It is a good source of Dietary Fiber, Riboflavin, Vitamin B6, Iron, Phosphorus, Choline.