In a small skillet over low heat, lightly toast the pumpkin seeds for 2 minutes until they start to smell nutty.
In a mixing bowl, combine the toasted pumpkin seeds with hemp hearts, chia seeds, ground flaxseed, sea salt, and cinnamon.
Add the almond butter, vanilla extract, and water to the dry ingredients.
Stir the mixture vigorously until the almond butter is distributed and the seeds begin to clump together.
Line a small airtight container with parchment paper and press the seed mixture firmly into the bottom in an even layer.
Refrigerate the container for at least 2 hours to allow the chia and flax to absorb the moisture and bind the bars.
Lift the parchment out and slice the slab into two dense, high-protein energy bars.