In a heavy bottomed sauce pot, whisk together milk, cream, and sifted cornstarch. Bring to a boil. Remove from heat and add cocoa powder, sugar, and salt. Whisk until cocoa powder has dissolved.
Place chopped chocolate in a large bowl. Pour hot liquid mixture over chocolate. Let sit for a few minutes to allow chocolate to melt. Mix until chocolate has melted. Let mixture sit for 5 minutes to cool.
Place sliced figs in popsicle molds. Use chopsticks or the back of a spoon to press the figs to the sides of the mold.
Gently pour chocolate mixture into popsicle molds. Insert wooden sticks into molds and freeze for at least 4 hours until fudge popsicles are solid.
Drizzle melted white chocolate over frozen fudge popsicles. Top with chopped pistachios. Enjoy immediately!