Pour the water in a microwave-safe bowl. Sprinkle the gelatin over the cold water and let sit for 5 minutes.

Microwave the water and gelatin in 15 second intervals until fully dissolved (for me, this took three intervals).

Pour the water and gelatin mixture in the bowl of a standing mixer fitted with the flat beater. On low, mix in the confectioner’s sugar one cup at a time until a dough forms.

Add a dash of flavoring and/or extract of your choice, if desired, to the entire batch, or add different flavorings and extracts to divided dough.

Divide the dough and tint desired colors by kneading one to two drops of food coloring into each section of dough.

On a surface dusted with confectioner’s sugar, roll the dough out about 3/8-inch thick. Cut out hearts and place on a baking tray lined with parchment or wax paper.

Let the hearts dry one to two days before adding your messages with the edible writers.