Set aside 4 slices of the Cooper® Sharp cheese. You’ll use these on the burgers, so keep them in the fridge until you’re ready for them.
Cook macaroni according to package directions.
Melt butter in a 3-quart saucepan until sizzling. Stir in flour, 1/2 teaspoon salt, and 1/8 teaspoon black pepper. Add milk and cook over medium heat, stirring constantly until mixture thickens (about 5-7 minutes).
Reduce heat to low. Stir in remaining Cooper® Sharp cheese slices (not the 4 slices in your fridge), stirring constantly until cheese is melted. Add cooked macaroni and stir well.
In a medium bowl, mix ground beef, 1 teaspoon salt, and 1/2 teaspoon black pepper. Form into 4 patties.
Cook the burgers in a medium skillet for 6-8 minutes per side, or until the internal temperature reaches 165°F, and burgers are browned all the way through. On two of the burgers, during the last minute or so of cooking, layer 2 slices of Cooper® Sharp each. Continue heating until the cheese is as melty as you like it.
Place a piece of lettuce on the bottom section of one of the buns and add one burger patty (without cheese). Scoop a generous portion of the mac and cheese onto the burger. Layer the second burger patty (with cheese) on top of the mac and cheese. Top the burger with a condiment of your choice and place the top of the bun on the burger.
*Consuming raw or undercooked meats, poultry, seafood, shellfish, or eggs may increase your risk of foodborne illness.