Preheat the oven to 350F. Line an 8 x 8-inch baking pan with parchment paper.
In a large bowl, combine the flaxseed, hemp hearts, applesauce, molasses, maple syrup, and coconut oil and whisk to incorporate. Set aside.
In a small bowl, combine the flour blend, buckwheat flour, cacao powder, ginger, cinnamon, baking soda, and salt. Add the dry ingredients to the wet, mixing with a spatula, then fold in the raisins. Put the thick, brownie batter-like mixture in the prepared pan. I find that it helps to slightly wet the spatula to evenly spread out the sticky mixture.
Bake for 25 minutes until firm to the touch and golden brown. Store in an airtight container. They are delicious when stored in the refrigerator and can also be frozen.