In a medium saucepan on medium heat, melt the butter.
Add the flour and mix until incorporated.
ΒΌ cup at a time, add your milk. Stir after each addition until fully incorporated before adding more. Turn the heat off.
Add all of your seasonings to the pan.
Add the cheese and stir.
Slowly add more milk if the queso sauce is too thick. If it is too thin, leave it on the warm burner longer or turn up the heat slightly until the sauce thickens to your desired consistency.