Add the pecan cookies to a high speed blender and pulse a few times until crushed completely. Remove the cookie crumbs from the blender and set aside in a small bowl.
Add all of the remaining ingredients to the blender and blend for 20 - 30 seconds until combined. If your blender has a "frozen treat" option, use it. Distribute the liquid among 6 Popsicle molds just below the fill line. Spoon the crushed cookies into the Popsicles and push the cookies down into the Popsicles with a knife or spoon. Insert the sticks into the Popsicles and freeze overnight.
To serve, run a Popsicle under warm (NOT hot) water for about 10 - 15 seconds. Gently ease the Popsicle out of its mold and enjoy immediately!