Preheat the oven to 350°F and line two baking sheets with parchment paper or a baking mat. Set them aside.
Melt the butter in the microwave at 20-second intervals.
2⅛ cups Butter
Whisk dry ingredients and set aside.
2 cups All-purpose flour, 1 teaspoon Baking powder, ¼ teaspoon Salt
Add the cocoa powder, stir and set aside. Let the cocoa bloom and dissolve.
¾ cups Cocoa powder
Using a stand mixer set on the paddle attachment, beat both sugars, and butter mixture for 2-3 minutes.
1 cup Dark brown sugar, ¾ cup Granulated sugar
Add in the eggs, yolk, and vanilla extract, and beat for another minute.
1 tablespoon Vanilla extract, 1 Egg yolk, 2 Eggs
Using a rubber spatula, gradually add in dry ingredients and mix. Do Not overmix.
At the end add the chopped chocolate and mix.
12 ounce Chocolate
Use a large scoop to measure the dough into balls the size of a small tangerine. Place them on the baking sheet and leave a 2-inch space between them.
Place a few orange smarties on top of each ball and press lightly.
½ cup Orange color smarties
Bake for 10-15 minutes, until the edges are set. Leave on the tray to cool down for 10 minutes, then transfer to the cooling rack to cool completely.