In a large bowl, whisk together the melted butter and sugar until smooth.

Crack in the eggs, add the vanilla extract, then mix well.

In a separate bowl, whisk together the cocoa powder, flour, and salt.

Add the dry ingredients into the wet ingredients and be sure not to overmix.

Pour the batter into a 9x13 baking pan with parchment paper at the bottom then smooth it out.

Bake for 25 minutes in a 350°F oven until just set then cool completely for 30 minutes.

Get a bowl then pour in your dark chocolate chips, add your hot heavy cream, then stir until smooth.

Once your brownies have cooled down, pour the ganache on top of the brownies and spread evenly.

Once the ganache has been poured on the brownies, immediately add your rainbow candy-coated chocolate chips or nerds.

You can either refrigerate this for 1–2 hours until ganache then lift brownies out, then slice them into rectangles or you can slice them immediately.