01 - Preheat your oven to 350°F. Line an 8x8 inch baking pan with parchment paper, leaving some overhang for easy removal.
02 - In a medium bowl, whisk together the flour, cocoa powder, brown sugar, baking powder, and salt until well combined. Add melted coconut oil or vegan butter, plant milk, and vanilla extract. Mix until just combined. Fold in the dark chocolate chips.
03 - Press the brownie batter evenly into the bottom of the prepared pan using a spatula or offset spatula.
04 - In a separate bowl, beat the softened vegan butter, brown sugar, and granulated sugar together until light and fluffy, about 2-3 minutes. Add the plant milk and vanilla extract, mixing well to incorporate.
05 - Add the flour, baking soda, and salt to the butter mixture. Stir until just combined, being careful not to overmix. Fold in the chocolate chips.
06 - Carefully spread the cookie dough in an even layer over the brownie batter. Lightly wet your spatula or hands with water to prevent sticking and help distribute the dough evenly.
07 - Bake for 30-35 minutes, or until the top is golden brown and a toothpick inserted in the center comes out with a few moist crumbs attached.
08 - Allow the brookies to cool completely in the pan before lifting out using the parchment paper overhang. Slice into 12 equal squares for serving.