1. Heat oven to 350ºF. 2. Line square pan with foil. Spray with cooking spray. 3. Mix Swerve and butter. Stir in eggs and maple extract. Add coconut flour, almond flour, and baking powder and mix. Stir in nuts. Pour in pan. 4. Bake 35 mins. Allow to cool in the refrigerator for an hour before cutting. 5. Remove dessert from pan before cutting into squares.