In a large skillet, melt Unsalted Butter (2 tablespoon) over medium-heat.
Next, add the Napa Cabbage (1/2 head) and Salt and Pepper (to taste).
Saute the cabbage until caramelized about 7 minutes. Remove from skillet.
Place four slices of Rye Bread (8 slice) on a baking sheet.
Top each slice with Corned Beef Brisket (1 pound), Irish White Cheddar Cheese (4 slice), and cabbage.
Place baking sheet under broiler until cheese has melted and the sandwich has warmed through.
Remove sheet from oven and top with remaining slices of bread. Serve immediately. Enjoy!