These are so delicious and just as easy! We've made similar cookies with lemon or strawberry flavors, and the latter would also have been great for Valentine's Day, but I already had a box of red velvet cake mix in the pantry and decided to use that.
You do have to be careful about two things if you cut out the heart shapes:
#1: If you cut while the cookies are still sitting on a warm cookie sheet like I did, be advised that your cookie cutter will start to get hot. I used a metal cookie cutter and it really transferred the heat! We have some Kevlar gloves that the kids use when they help out in the kitchen (to keep them from cutting themselves), and I ended up having to put those on.
#2: You'll end up with a plateful of scraps, and it will take a tremendous amount of willpower not to eat them all at one go!