Place marshmallows and butter in a large pot on medium/low heat. Stir constantly until marshmallows are completely melted and smooth, then remove from heat.
10 ounces mini marshmallows, 1/4 cup butter
Add Rice Krispies to melted marshmallows and mix until cereal is well coated.
6 cups Rice Krispies Cereal
To create heart shaped treats: either press the mixture into a 9" x 13" pan lined with parchment paper, allow to cool completely, then remove from the pan and cut out with heart shaped cookie cutters. Or, using buttered hands and cookie cutters, press the warm mixture directly into the heart shaped cookie cutter to form the heart. Carefully remove the cookie cutter then place the shaped treat on parchment paper to cool.
1 - 2 TBS butter for hands/cookie cutter
To decorate the hearts, place each color of candy melts in a separate microwave-safe bowl. One color at a time, microwave for 30 seconds, stir, then repeat until completely melted and smooth. 1/2 - 1 tsp coconut oil may be added to chocolate if needed to make it smooth and easy to spread.
1/2 cup each colored candy melts, 1 TBS coconut oil
Use a piping bag, or plastic baggie with the corner tip cut off, to pipe melted chocolate around the edge of heart shaped treats. Then fill in the heart with melted chocolate and spread to the outline with a knife, making it nice and smooth. Repeat with each color until you have finished all the treats.
Once coating is completely cooled, use an edible pen to write sayings on the hearts. Use a damp paper towel to wipe away any mistakes. (Or you can skip this step and free-hand the sayings!)
edible pen
Choose the color you want the sayings to be and melt the chocolate as noted above. Then use a piping bag with a small hole to write over the edible marker sayings or free-hand sayings on coating.
Allow to cool completely before serving.
Notes
Store in an airtight container for up to three days. Longer than that and they’ll start to get hard, so it’d be easier to just whip up a new batch!Work in color batches. Choose two colors of candy melts to melt at a time and use those colors to add color to the hearts and to write on the hearts. For example, melt blue and purple at the same time. Then do some hearts with a purple layer and blue writing and some hearts with blue base layer and purple writing. That way you don’t have to deal with a bunch of colors all at once.Keep your temperature low on the marshmallow mixture, even if you are tempted to heat it up higher to melt it quicker. Slow and low is the way to go!