Prepare the brownie mix, melted butter, and eggs in a bowl. Whisk the eggs first, then add the mix and butter.

Add sugar and other dry ingredients from the mix packet. Stir thoroughly with a whisk until the batter is smooth and sticky.

Pour the batter into a baking mold or box. Tap the mold gently to level the surface.

Bake in a preheated oven at 170-180°C for 20-25 minutes. Alternatively, microwave for 3 minutes and 30 seconds.

Let the brownies cool completely. Decorate with melted chocolate or skip this step if preferred.

Dust cocoa powder over the brownies and cut them into triangular pieces.

Stack the brownie pieces on a plate to form a tree shape. Start with 5 pieces at the base, then layer 4, 3, and finally 1 piece at the top.