Preheat the oven to 350ºF. Line an 8×8” pan with baking paper.
Place all the dry ingredients into a mixing bowl, stir to combine and set aside.
In another bowl, mix the peanut butter, sugar-free maple syrup, sugar-free brown sugar and vanilla extract together, until smooth. Add the eggs and almond milk to the mixture and stir again.
Combine the dry and wet ingredients, then add the melted coconut oil and mix to combine. Gently fold in the melted chocolate.
Transfer the brownie batter to the lined pan and top with extra chocolate chips if desired.
Place the pan into the hot oven and bake for 35-40 minutes, until the mixture is almost cooked in the center.
Remove from the oven and cool for 3-5 minutes, then transfer to a wire cooling rack.
Cut into 12 even-sized brownies and serve warm or cooled.