Garlic Butter Meatball Subs on a Stick - Chef YoYo

Ingredients

• 1 lb Ground Beef (80/20 mix)
• 1 large Egg, lightly beaten
• 1/2 cup Panko Breadcrumbs
• 2 Tbsp Whole Milk or Cream
• 1/4 cup freshly grated Parmesan Cheese
• 1 tsp Dried Oregano
• 1/2 tsp Onion Powder
• Salt and Black Pepper, to taste
• 2 Tbsp Olive Oil
• 1 (24 oz) jar Marinara/Tomato Sauce
• 3 Mini Baguettes or Crusty Sub Rolls (cut into 1-inch cubes)
• 6 oz Fresh Mozzarella (low-moisture block, cut into 1-inch cubes)
• 4 Tbsp Unsalted Butter
• 3 large Garlic Cloves, finely minced
• 2 Tbsp Fresh Parsley, finely chopped
• 2 Tbsp Extra Parmesan (for grating)