Preheat oven to 180°C.
Place Dr. Oetker Nona Brownies Dark Chocolate, eggs, vegetable oil and almond nibs in a mixing bowl, mix until well combined (with wooden spatula or hand whisk).
Pour batter in a greased rectangle baking tray. Bake for 40 minutes, set aside to cool, then cut into squares.
Melt white cooking chocolate with microwave oven or “double boil”. Place a marshmallow on top of the brownie squares. Spread 1tbsp of white cooking chocolate over the marshmallow, set aside.
Melt cooking chocolate with microwave oven or “double boil”. Dip a toothpick with cooking chocolate and draw the eyes and mouth on the marshmallow.