Preheat your oven to 350°F (180°C). Line an 8x8-inch pan with parchment paper and set aside.
Mix dry ingredients: In a small bowl, whisk together the almond flour, baking powder, and salt.
Combine wet ingredients: In a larger mixing bowl, whisk together softened butter, sweetener, eggs, cocoa powder, and vanilla extract until smooth.
Add dry to wet: Slowly add your dry mixture to the wet mixture. Stir until just combined.
Optional: Fold in chocolate chips for an extra indulgent touch.
Bake: Pour the batter into the lined pan. Spread evenly and bake for 35 minutes, or until a toothpick comes out with just a few crumbs.
Cool completely before slicing into squares.