Preheat oven to 200°. Line a cookie sheet with wax or parchment paper and set aside
Place the unwrapped Jolly Rancher candies in a plastic bag and seal tightly, making sure all of the air is out of the bag. Use a rolling pin or a hammer to break the Jolly Rancher candies up into small pieces.
Generously fill each shamrock mold with the Jolly Rancher pieces. Place the candy mold sheet on the parchment-lined cookie sheet and into the pre-heated oven. Depending on your oven, it will take about 7-9 minutes for the Jolly Ranchers to melt completely.
Once the candies have melted, remove the mold from the oven. Insert a lollipop stick into the center of each shamrock cavity.
Chill for 30 minutes. Gently release each lollipop from the mold and enjoy!