Key Lime Simple Syrup
1/2 cup water
1/2 cup key lime juice
1/2 cup sugar (or honey)
2 cups Greek-style plain yogurt
1 cup plus 2 tablespoons key lime simple syrup
1 teaspoon vanilla extract
1/2 cup crushed graham crackers
Make the Simple Syrup
In a medium saucepan heat the water, lime juice, and sugar until the sugar has dissolved. If using honey, heat until the mixture simmers. Remove from the heat and allow to cool.
Make the Popsicles
Mix together the yogurt, 1 cup key lime simple syrup, and the vanilla until smooth. Pour into popsicle molds. In a small bowl, mix the graham cracker crumbs with remaining simple syrup until moistened. Carefully spoon about 1 tablespoon of crumbs onto the bottom of each popsicle mold over the yogurt. Press lightly to secure. Insert sticks or tops to the molds and freeze until stiff.
To unmold, run under warm water for 10-20 seconds, as needed. Serve immediately.