In a stand or with a hand mixer, beat the butter and salt until nice and fluffy. Add the garlic and parsley and stir to combine well. (At this point you can lather it on some bread and eat it right away! Yum! With the leftovers…)
Transfer the garlic herb butter to a sheet of plastic wrap and roll up to form a cylinder shape. Tighten the ends and refrigerate until it becomes solid. Alternatively, just pour into a mason jar and refrigerate like that.