Melt butter and chocolate in saucepan over medium heat. Stir frequently to avoid burning.
Remove from heat and pour mixture into medium bowl, allowing to cool for about 10 minutes.
Preheat oven to 350 and line an 8 x 8 baking pan with foil. Make sure foil overhangs on sides to make for easier removal.
Whisk the sugar and brown sugar into the cooled chocolate mixture.
Add in the eggs one at a time.
Whisk in the vanilla extract.
Gently fold in the flour, cocoa powder, salt, and chocolate chips.
Pour batter into prepared baking pan and bake in oven for 35-40 minutes. *Be sure to check them starting at 30 minutes since all ovens cook differently.
Remove pan from oven and allow to cool completely!
Frosting
While brownies are cooling, beat butter until fluffy.
Gradually add in the powdered sugar, heavy cream, and vanilla.
Whip until fluffy and consistency desired is reached.
Decorating
Use cookie cutter of choice to shape brownies.
Carefully place cut out brownie on cooling rack for easy decorating. If desired, dye frosting with food coloring as I used pink
Spread frosting on top of brownies, along with sprinkles! Serve!
Notes
*To save on time, you can also use boxed brownie mix and pre-made frosting that you dye to color!