-
Melt 2 tablespoons butter in small saucepan over medium heat. Add flour and stir 1 minute. Gradually whisk in milk. Increase heat to medium-high and boil until sauce thickens, whisking constantly, about 2 minutes. Season with salt and pepper.
-
Preheat broiler. Place 2 bread slices on a baking tray and cook until the bread browns. Remove from oven and set aside.
-
Heat a skillet on medium high heat. Add 1 tablespoon of grape seed oil.
-
Add the burger in a skillet and cook approximately 4 minutes per side.
-
After flipping the burger to the second side, top with the sliced gruyere and 1/2 of the shredded cheddar cheese and cover the skillet with a pan top. Cook for 2 more minutes to get a good melt.
-
Add the cheeseburger to the bread.
-
Spoon the bechamel sauce to the top piece of bread.
-
Add grated cheddar cheese over the bechamel.
-
Return to the Broiler and cook until the cheese begins to brown, about 2 minutes.
-
Serve and enjoy!