Preheat oven to 400
Slice off the top of the head of garlic to expose the cloves and then place on aluminum foil and drizzle with a little olive oil.
Wrap the foil around the garlic, so that it is completely sealed. Place in oven on a baking sheet.
Roast for 35-45 minutes or until garlic is very soft.
Let garlic cool for 5 minutes and then squeeze garlic out into a food processor.
Melt stick of butter and then add to food processor.
Blend the garlic and butter together for a few seconds and then transfer to a foil lined tuber ware, to create a mold for the butter.
Chill until hardened, this recipe will use half of that stick of butter.