Preheat oven to 350˚F.

In a pan melt down 2 Tbsp. of butter and add in the pretzel crmumbs, cooking until they are crispy. Remove from the pan and set aside.

Add the remaining 4 Tbsp. of butter into the pan, once melted add in the flour stirring until it turns a golden. After a minute or two slowly whisk in the milk and beer until smooth.

Remove from heat and add in cheese, stirring until it is melted in. Add in the cooked noodles and mix until coated.

Place mac and cheese in a baking dish, top with the toasted pretzel and back for about 25 minutes.