2 cups blanched almond flour
Preheat oven to 350 degrees F. Grease a 9" x 13” nonstick baking pan.
Whisk almond flour, ground flax, coconut flour, chia seeds, sweetener, salt, baking powder, baking soda and cinnamon together in a bowl, breaking up any lumps.
In a separate bowl, beat eggs, vanilla extract, strawberry extract, buttermilk and oil together. Add wet ingredients to dry ingredients and mix well. Stir in strawberries and 1/2 cup chopped walnuts. Pour batter into prepared pan; spread evenly with a spatula. Top with reserved 1/2 cup chopped walnuts and chocolate chunks.
Bake for 50-55 minutes, or until toothpick inserted in center comes out clean. Cool in pan.