Preheat a skillet over medium heat.

Trim the crusts off the bread slices and flatten them with a rolling pin.

Place a slice of cheese at one end of each flattened bread slice and roll them up tightly.

In a small bowl, mix the butter with garlic powder if using. Spread the mixture evenly over the outside of each roll-up.

Place the roll-ups seam side down in the preheated skillet. Cook for about 2-3 minutes on each side or until golden brown and the cheese is melted.

Remove from the skillet and sprinkle with chopped parsley if desired. Slice in half and serve warm.