Add the pitted dates to the food processor and pour the boiling water over. If they can't be fully covered you may pour the water and dates into a more narrow container that allows for them to be fully submerged. Soak for 15 minutes.
Add dates back to the food processor and process until it formas a date paste. It may take around a minute. Stop to scrape the sides as needed during this process to ensure it all gets smoothlly processed.
Add the cacao powder, almond flour, flax meal, vanilla, salt, and baking powder.
Process for 30 seconds on medium speed. The batter should be thick and a bit dry.
Add the almond milk and process again for 20 seconds. The batter should be shiny and moist.
Spread the brownie batter into the prepared 8" x 8" pan.
Bake for 20 minutes until the top of the brownie is formed. Remove from the heat and allow them to cool down in the pan for 20 minutes at room temperature.