1Blend 20 grams of oats and 96 grams of erythritol until they become a dust.
2Add a pinch of instant coffee granules, 40 grams of Hershey's cocoa powder, 30 grams of Hershey's special dark cocoa powder, a pinch of salt and a pinch of baking powder to the blender.
3Blend all the ingredients until there are no more chunks.
4Pour the dry ingredients into a bowl.
5In another bowl, whip three egg whites on high for a few minutes until they become thick and fluffy.
6Add 170 grams of greek yogurt, 2 tablespoons of vanilla extract and 30 grams of almond milk to the bowl with the dry ingredients.
7Mix the ingredients with the hand mixer until you obtain a brownie batter.
8Add one-third of the egg whites, whisk, then add another one-third, whisk, and finally add the rest.
9Pour the batter into a prepared 9x9 inch pan and bake at 375 degrees for 18 minutes.