In a medium bowl, beat butter with a stand or hand mixer until it looks like creamy peas

Sift the powdered sugar in another bowl. With the mixture on, add the powdered sugar in three batches starting with low and working your way up to high until it is completely incorporated

Beat in the vanilla extract

Add the half & half one tablespoon at a time until you reach the consistency you desire. Your frosting is now ready to be used for whatever you may desire!

I found one batch was enough to frost a one layer 9 x 13 cake