INGREDIENTS
12
slices thick-cut bacon, such as Nodine’s applewood smoked
1 cup
good mayonnaise
1/4 cup
Dijon mustard
1/4 cup
freshly grated Parmesan cheese
1 1/2 tsp
kosher salt
1/2 tsp
freshly ground black pepper
1
white pullman loaf or sourdough bread, sliced 1/2-inch thick (12 slices)
6 tbsp
salted butter, at room temperature (for spreading, you probably won’t use it all)
6 oz
aged Gruyere or Comte cheese
6 oz
extra-sharp Cheddar, such as Cabot or Shelburne Farms