- Line a 9×9 square pan with parchment paper and set aside. Preheat oven to 350º F. 
- Add the almond flour, cacao powder, baking soda, and sea salt to a bowl, and stir to combine. 
- Into a large mixing bowl, whisk eggs, and then whisk in melted coconut oil (or melted butter), coconut sugar, and vanilla. 
- Add the dry ingredients into the bowl with the wet ingredients, and stir into a smooth batter. Fold in chocolate chips or walnuts, if desired. 
- Pour the brownie batter into the prepared baking dish. Top with additional chocolate chips, if desired. 
- Bake the brownies for 18-20 minutes. Allow to fully cool prior to slicing.