Step 1

Preheat oven to 350ºF and line an 8×8-inch baking pan with parchment paper.In a large bowl, combine tahini, maple syrup, eggs, and vanilla; whisk well to combine.Add cocoa powder, baking powder, and salt; use a wooden spoon or rubber spatula to stir until the mixture is smooth.

Step 2

Fold in chocolate chips (or walnuts) and transfer mixture to prepared baking pan. Bake for 24 to 26 minutes, or until a toothpick inserted in the center comes out mostly clean. Sprinkle with flaky salt, if desired.Let brownies cool completely in the pan on a wire rack. Lift parchment and brownies from the pan and cut into 12 squares.