I have melted the butter this time but I will probably use room temperature butter next time as I am sure the cookies will be as good. (homecookingadventure.com)
Mix pumpkin puree with room temperature butter in a large bowl, and stir in garlic, cheese, and seasonings (or just seasonings and sugar for the sweet version). (bijouxandbits.com)
Using a pastry knife (shown in picture) cut in room temperature butter until thoroughly combined. (glitterandgoulash.com)