Prepare the ingredients before starting to cook because this is a fast recipe and you will want to have the ingredients next to you. Measure ingredients and slice cheese.
Melt butter over medium heat and whisk in flour until smooth.
Start pouring in beer while slowly whisking. Let the mixture come to a simmer.
Add cheeses, milk, mustard, and seasonings.
Slowly stir with a whisk or a wooden spoon while the cheese is melting.
Once cheese is melted, let it come to simmer and take it off heat.
Video
Notes
Gluten Free Option: With two simple substitutions, you can enjoy this dip in a gluten free version. To thicken the dip, use gluten free all purpose flour and use your favorite gluten free beer to make the dip. There are several gluten free beers on the market and even though they tend to have a strong, IPA-like flavor, you can still use it to make the dip.
Reheating: Microwave is the easiest way to heat up this dip but make sure to set it on half the power or it will scald the cheese and cause it to break up. If you don’t want to use a microwave, you can also reheat it in a saucepot. Make suer to heat it over medium-low heat, and stir pretty often. Reheat it just until heated through, be careful not to overheat.