Meatball Sub Sandwich

Ingredients (14)

• + 5 Ball Park® Tailgaters Brat Buns add to pantry
• ✓ 1 pound lean ground beef
• + ¼ cup milk add to pantry
• ✓ 1 egg
• + 2 tablespoons grated Parmesan cheese add to pantry
• + 1 teaspoon Italian seasoning add to pantry
• + ½ teaspoon onion powder add to pantry
• + ½ teaspoon garlic powder add to pantry
• + salt and pepper to taste add to pantry
• ✓ salt and pepper to taste
• + 1 (24 ounce) jar marinara sauce add to pantry
• + 1 cup arugula add to pantry
• + 4 tablespoons shredded mozzarella cheese add to pantry
• + Chopped fresh basil or crushed red pepper for garnish add to pantry