01 - Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, leaving overhang for easy removal.
02 - In a medium mixing bowl, whisk together the flour, cocoa powder, baking powder, and sea salt until evenly blended.
03 - In a large bowl, combine nut-milk pulp, sugar, melted coconut oil or unsalted butter, eggs, and vanilla extract. Whisk until smooth and cohesive.
04 - Gradually fold dry ingredients into wet mixture using a spatula, mixing only until just combined to avoid overworking the batter.
05 - Fold in dark chocolate chips or chopped chocolate and nuts if using, ensuring even distribution.
06 - Transfer batter to prepared pan and smooth the top with a spatula.
07 - Bake for 28 to 32 minutes or until a toothpick inserted into the center yields a few moist crumbs. Avoid overbaking.
08 - Allow brownies to cool completely in the pan before lifting out and slicing into squares.