Add walnuts and pumpkin seeds to food processor. Pulse until a fine powder forms.
Add hemp hearts, protein powder, beet powder, salt, and cinnamon. Pulse until fully incorporated.
Add dates and vanilla. Process until crumbly but sticky.
Transfer the pulsed mixture to a bowl and mix in the water.
Divide into 12 portions. Squeeze the dough into a ball, and then press into thin flat discs on parchment.
Freeze for about 20 minutes, or until chilled.
Melt the chocolate, if using. Drizzle lightly over frozen discs.
Freeze another 10 minutes to set.
