To make a roux for mac and cheese, start by melting equal parts butter and flour (typically 2-3 tablespoons each) in a saucepan over medium heat. Whisk continuously for about 1-2 minutes until the mixture is smooth and slightly browned to cook out the raw flour taste. Then slowly whisk in milk, continuing to stir until the mixture thickens to coat the back of a spoon, which usually takes 4-7 minutes. After the roux has thickened, you can add cheese to create the mac and cheese sauce.
Step-by-step guide:
- Melt butter in a saucepan over medium heat.
- Whisk in an equal amount of all-purpose flour.
- Cook and whisk for 1-2 minutes until the raw flour smell is gone and mixture slightly browns.
- Gradually whisk in room temperature or warm milk, stirring constantly.
- Continue cooking and stirring until the sauce thickens and coats the back of a spoon.
- Remove from heat and add shredded cheese, stirring until melted and smooth.
- Season with spices like salt, pepper, garlic powder, onion powder, and mustard powder if desired.
This base roux with milk creates a creamy cheese sauce perfect for mac and cheese.
