For the frosting, soak cashews overnight (or in hot water for 30 minutes) and place a can of coconut milk in the fridge overnight (or use coconut cream).
Preheat oven to 350. Add dates and 1/2 cup water to a small saucepan over medium-high heat. Let it bubble until water evaporates (~ 10 minutes).
Meanwhile, combine dry ingredients in a mixing bowl: flours, spices, sea salt, baking powder, and baking soda.
Blend dates with non-dairy milk.
Add wet ingredients to a separate bowl: date mixture, pumpkin puree, coconut oil, maple syrup, and vanilla.
Mix wet and dry ingredients together. Press into an 8x8 pan. Bake for 30-35 minutes, or until a toothpick comes out clean AND the top has crisped up a bit.
Frost the bars and enjoy!