1. Preheat your oven to 350°F.
2. Line a baking sheet with parchment paper and set aside.
3. In a small bowl, mix the softened butter with garlic powder and chopped parsley.
4. Spread the butter mixture generously on the outside of each Hawaiian roll half.
5. Layer a slice of cheddar and a slice of mozzarella cheese between each roll half.
6. Place the sandwiches on the prepared baking sheet.
7. Bake in the preheated oven for 10-12 minutes, or until the cheese is melted and the rolls are golden brown.
8. Remove from the oven and let cool for a minute before serving.

Just like my grandmother taught me, pay attention to the little details—the aroma of garlic butter wafting through the kitchen is sure to bring everyone to the table!