Stir the butter, garlic and parsley, if using, together in a small bowl. Season with a little salt (only if using unsalted butter) and black pepper. If the butter is too cold to mix, warm the ingredients in a small pan until melted and combined, then leave to cool. Will keep for up to one week in the fridge.
How to use garlic butterUse the garlic butter to brush on dough balls or make garlic bread – sandwich in a sliced baguette and bake, or cover a cooked pizza base or flatbread.