Garlic Bread Meatball Subs

• 3 cups marinara sauce (store-bought or homemade)
• 1 tsp olive oil
• 1 clove garlic, minced
• ½ tsp chili flakes (optional)

For the garlic bread rolls

• 4 sub rolls or hoagie buns
• 4 tbsp unsalted butter, softened
• 3 cloves garlic, finely minced
• 1 tbsp parsley, finely chopped
• Pinch of salt

Toppings

• 1½ cups shredded mozzarella
• ¼ cup grated Parmesan
• Fresh basil or parsley for garnish