Steps
1. Cook the elbow macaroni in salted boiling water until al dente. Drain and set aside.
2. In a small saucepan, melt the butter over medium heat.
3. Whisk in the flour and cook for about 1 minute to form a roux.
4. Gradually add the milk, whisking constantly to prevent lumps.
5. Cook the sauce until it thickens, about 3-4 minutes.
6. Lower the heat and add the powdered cheddar, Kraft Singles slice, and shredded lactose-free mozzarella. Stir until all cheese is melted and smooth.
7. Season the cheese sauce with salt and freshly cracked black peppercorns.
8. Combine the cooked macaroni with the cheese sauce, stirring well to coat.
9. Serve hot with an extra sprinkle of cracked peppercorn on top if desired.