Set a sauté pan (or small sauce pot) over medium heat. Add in the milk, cream, cheese, garlic powder, and cayenne pepper. Stir as the cream cheese melts and reduce the heat if needed to make sure it does not boil.
Once the cream cheese has melted into the milk, mix in the shredded cheddar. Continue to stir until the sauce is smooth.
Taste and add salt or additional cayenne pepper, if desired. Serve over roasted or steamed, broccoli, or go crazy and serve over Brussels sprouts or roasted potatoes!
Notes
Cool and store leftover sauce in an airtight container. Keep homemade cheese sauce in the fridge for up to 5 days.