Start by melting the candy melts. Add them to a microwave safe bowl and microwave for 30 second increments, stirring well between, until melted.
Add parchment to a baking sheet and set aside.
Take each Nutter Butter cookie and dip one side into the candy melts. Let the excess drip off, but make sure the whole side is covered.
Dip that into the sanding sugar.
Place the Nutter Butters, candy and sugar side up, onto the parchment.
Add a jumbo heart sprinkle.
Repeat for all of the cookies, and then allow them to set for about an hour.