01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, allowing overhang for easy removal.
02 - Whisk together almond flour, cocoa powder, baking powder, and salt in a medium bowl until thoroughly blended.
03 - Whisk sugar and melted butter in a large bowl until smooth. Add eggs and vanilla; whisk until fully incorporated.
04 - Add dry ingredients to wet mixture and stir gently until just combined. Avoid overmixing to prevent dense texture.
05 - Fold in chocolate chips and nuts if desired, distributing evenly throughout batter.
06 - Transfer batter to prepared pan and spread into an even layer using a spatula.
07 - Bake for 22-25 minutes until center is just set and toothpick inserted comes out with moist crumbs, not wet batter.
08 - Allow brownies to cool completely in pan before lifting out and cutting into squares.