Put beer in bread maker (can be cold, but room temp may be better), add melted butter, then sugar, salt, yeast, and flour last. and start. My machine will take 1 hr. 50 minutes to process.
If you do not have a bread maker:
Preheat the beer to 110 to 115 ºF. Combine the beer, sugar and kosher salt in the bowl of a stand mixer and sprinkle the yeast on top. Allow to sit for 5 minutes or until the mixture begins to foam. Add the flour and butter and, using the dough hook attachment, mix on low speed until well combined. Change to medium speed and knead until the dough is smooth and pulls away from the side of the bowl, approximately 4 to 5 minutes. Remove the dough from the bowl, clean the bowl and then oil it well with vegetable oil. Return the dough to the bowl, cover with plastic wrap and sit in a warm place for approximately 50 to 55 minutes or until the dough has doubled in size.