In a small bowl, combine softened unsalted butter with finely chopped fresh sage, a pinch of salt, and freshly cracked pepper. Mix until well blended.

Carefully thinly slice your apple and gouda cheese to about 1/8 inch thick.

Spread sage butter on one side of each slice of bread. On the unbuttered side, place gouda cheese and apple slices, adding turkey bacon if desired.

Heat a non-stick skillet over medium heat. Cook the sandwich in the skillet with the buttered side facing up for 3-4 minutes on each side until golden.

Once toasted and melted, remove from skillet, let rest, and slice in half before serving.