Preheat oven to 360 F / 180 C.
Melt chocolate in a water bath (or any method you prefer) and swirl in the almond butter.
Whisk together plant-based milk and apple cider vinegar.
In a separate bowl, mix together all dry ingredients: flours, sugar, baking powder and soda, spices.
Pour chocolate + almond butter mix and milk + ACV mix to the dry ingredients and mix it well.
Pour the batter into a brownie pan (or other baking tin you prefer) and bake in the oven for 30 min.