In a small bowl, blend together 4 tablespoons of softened unsalted butter, 1 tablespoon of olive oil, 2 minced garlic cloves, 1 tablespoon of chopped fresh parsley, 2 tablespoons of grated Parmesan cheese, and a pinch of salt. Mix until smooth and creamy.

Take two slices of thick-cut bread like sourdough or Italian, and evenly spread the garlic butter on one side of each slice.

Place a non-stick skillet over medium heat and let it preheat for about 2 minutes.

Once the skillet is hot, carefully place the first slice of bread butter-side down into the skillet. Layer a generous amount of cheese on top.

Next, place the second slice of bread on top, butter-side up, and gently press down with a spatula to encourage even melting.

Carefully flip the sandwich using a spatula and toast the other side for an additional 3-4 minutes.

Once both sides are golden and the cheese is melted, remove the sandwich from the skillet. Let it sit for a minute before slicing in half.