Line two medium cookie sheets with parchment paper and keep aside.
Grease a heart shaped cookie cutter with oil and keep aside
Heat the butter in a large microwave proof bowl along with the marshmallows for a minute.
Stir, and put it back and microwave in increments of 30 seconds till fully melted.
Fold in the Rice Krispies and mix.
Spread out the rice Krispies mix on the prepped cookie sheets.
Using the heart shaped cookie cutter, cut out hearts while the mix is still slightly warm.
Let the Rice Krispies hearts set while you melt the candy melts according to package instructions.
Once the Rice Krispies hearts set, dip the hearts in the candy melt or slather some on the hearts.
Shake off excess sprinkles. Let the candy melt set. Serve. Better if consumed immediately, but can be stored in an airtight container.