In a medium bowl add the oats, nut flour, pumpkin pie spice, sea salt and baking powder, coconut sugar and whisk together. In another medium to large bowl add the prune juice, egg, warmed nut butter, coconut oil, vanilla extract and mix together. The add dry ingredients to the wet ingredients, and mix well. Lastly fold in hemp seeds and diced prunes. Press dough into cookie shapes and lay flat on a baking sheet. Bake at 350 degrees Fahrenheit for 15-18 minutes and then let cool for 3 minutes before enjoying. Store in an air-tight container in the refrigerator and eat within 1 week. The cookies will be a bit crumbly right out of the oven, however they firm up in the fridge!