
In a small saucepan, over medium heat, melt your butter and add your flour. Whisk together.
Let the flour and butter cook for 2-3 minutes.
Whisk in milk, whisking until smooth. It will start to thicken.
Season with salt and pepper to taste.
Serve immedietly.
This gravy will thicken as it cools. For reheating just heat over medium-low heat. Add milk as needed if the gravy is too thick when reheating.