Somehow a waffle just seems naked without a pat of butter melting into the ridges. This topping stretches a small amount of butter with fruity, fat-free apple butter.
Place butter in a small mixing bowl and beat with an electric mixer until creamy. Gradually add apple butter, beating until smooth. (The consistency may appear somewhat separated, but don't worry--the topping will melt evenly over the hot waffle.) Blend in vanilla and cinnamon.