In a saucepan melt butter over medium heat, stir in the flour and cook for approximately 1 minute.
Slowly whisk in the milk. Bring to a boil while whisking constantly.
Add salt and pepper. Once the mixture has come to a boil, reduce the heat to medium and continue to cook until the sauce thickens, about 5-7 minutes.
Once the sauce has sufficiently thickened, remove from the heat, and add in ¼ cup of grated OKA cheese. Stir until completely melted. Set aside.
Sandwich Assembly
Heat a skillet on medium low. Butter 4 slices of the Au Pain Dore Croissant Loaf and add to skillet.
Spread a generous dollop of the OKA Bechamel sauce on each slice.
Top with 3 slices of ham on each.
Using half of the grated OKA cheese, top the ham.
Close the sandwiches with another slice of the Croissant Loaf and butter the tops.
Grill the sandwiches until golden brown on both sides.
Once all 4 sandwiches are perfectly golden brown, place them on a parchment lined baking sheet, spread another generous dollop of the OKA Bechamel on top, and top with the remaining grated OKA cheese.
Broil for 1-2 minutes or until the bubbly and golden. Set aside.
Wipe out the skillet used to grill the sandwiches, melt the remaining butter and fry eggs sunny side up.
Place one egg on top of each sandwich and serve immediately.