Spread each of 4 slices of bread with 85 grams of Boursin cheese, cut each bacon slice in half lengthwise. Place 2 pieces of bacon (4 halves) on top of each of the prepared slices of bread and cover each prepared half with another slice of bread. Evenly butter the top of each sandwich, place each sandwich butter side down in a frying pan over a medium heat. While the first side is grilling, butter the second side of bread, cook until golden and crusty, about 1 to 2 minutes. Carefully turn and cook until second side is golden, about 1-2 minutes more. Serve and Enjoy