Start by softening your butter and spreading it generously on one side of each slice of bread. Sprinkle garlic powder and Italian seasoning over the buttered sides.

Flip the bread slices over so the unbuttered sides are facing up. Layer with marinara sauce, mozzarella cheese, grated Parmesan cheese, turkey pepperoni, followed by another slice of bread, ensuring the buttered side is facing up.

Heat a non-stick skillet over medium-low heat. Carefully place your sandwich in the skillet and cook for about 3-4 minutes until golden and crispy, pressing down gently.

Flip the sandwich and cook for another 3-4 minutes until golden-brown and the cheese is melted.

Remove from the skillet, let cool for a minute, slice in half, and garnish with fresh basil if desired. Serve with marinara sauce for dipping.