1 Make the bechamel sauce
Melt 1 tablespoon butter in a saucepan over medium heat
Whisk in 1 tablespoon flour and cook for about 1 minute
Slowly whisk in 1 1/4 cups whole milk
Simmer for about 10 minutes stirring often until thickened
Remove from heat and stir in 1 cup shredded Old Amsterdam cheese until melted and smooth
Season with salt a pinch of nutmeg and a pinch of cayenne pepper
Set aside
2 Assemble the sandwiches
Preheat oven to 350 degrees F
Spread a thin layer of bechamel on 4 slices of brioche
Top each with ham slices and a small handful of shredded Old Amsterdam cheese
Spread lingonberry jam on the other 4 slices of brioche or add a thin layer on top of the ham
Close the sandwiches
Place on a baking sheet
Spread more bechamel sauce generously on top of each sandwich and sprinkle with the remaining shredded Old Amsterdam cheese
3 Bake
Bake for about 10 minutes until the cheese is bubbly and golden
For extra browning broil for the last 1-2 minutes watching carefully
4 Serve
Optional Top with a dollop of lingonberry jam or cranberry sauce for a sweet-tart contrast