Precook bacon to desired level of brown crispness, drain and set aside. Reserve the bacon fat for another use.
Preheat griddle or cast iron pan over low heat with 2 Tbl of butter.
Brush outsides of bread slices with softened butter, spread layer of Caramelized Onion Balsamic Compote on both insides of bread.
Add sliced bacon, then top both insides with grated Barely Buzzed Cheese, reserving some for later.
Season with ground black pepper. Place the pieces of bread side by side in the pan, butter side down.
Cook until golden and crispy then flip one side on top of the other and cook until cheese is melted.
Sprinkle a thin layer of the grated cheese directly on the pan next to the sandwich and flip the sandwich over on top. Allow this to brown and crisp, repeat with cheese crust for the other side until crispy. Enjoy immediately.