Make the Brownies:

Cup of Yum
1. Preheat the oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper, leaving an overhang on two opposite sides (this will help you lift the brownies out later).
2. In a large mixing bowl, whisk together melted butter and sugar until smooth. Add the eggs and vanilla, mixing until incorporated.
3. Sift in the cocoa powder, flour, salt, and baking powder. Fold the dry ingredients into the wet ingredients just until combined.
4. Pour the batter into the prepared baking pan and spread it out evenly. Bake for 20-25 minutes or until a toothpick inserted into the center comes out with a few moist crumbs. Remove from the oven and let cool in the pan.

Prepare the Chocolate Ganache:

1. In a small saucepan, heat the heavy cream over medium heat until it begins to steam but not boiling. Remove from heat and pour over the chocolate chips in a bowl. Let it sit for a minute, then stir until the chocolate is fully melted and the mixture is smooth.

Assemble:

1. Once the brownies are cooled, pour the chocolate ganache over the top, spreading it out into an even layer.
2. Sprinkle the candy-coated chocolate pieces over the top of the ganache while it's still wet.
3. Place the brownies in the refrigerator for at least 2 hours to allow the ganache to set.
4. Using the parchment paper overhangs, lift the brownies out of the pan. Place on a cutting board and cut into squares using a sharp knife.