Start by creating your book of spells topper. Using the cookie cutter, cut out 22 rectangle brownies and place onto the cookie sheet.
Fill the piping bag with the cake frosting and use the piping bag to pipe a small dollop of frosting on the back of the edible eyes then place the eye onto the brownie.
Using the piping bag again, pipe a squiggly line on the side opposite of the eye to create the ‘Spine’ of the book.
Pipe half circle on the corners of the ‘Book’ and then pipe two dollops on the book. Repeat steps with other brownie rectangles then set aside while you make your cupcakes.
Preheat oven to 350 degrees and line cupcake pan with liners.
Using a large bowl and hand mixer, beat all ingredients until combined
Scoop into the cupcake liners, filling about 3⁄4 way full
Bake in the oven for 21 minutes
Remove and allow to cool completely before frosting.
Now, it's time to make the frosting. Using a standing mixer, or large bowl and hand mixer, beat the butter, powdered sugar, vanilla extract, and heavy whipping cream until combined, smooth and stiff peaks form
Scoop about 1 1⁄2 C of frosting into another bowl and mix in a few drops of the purple food coloring
Add a few drops of neon green into the main bowl of frosting
Scoop 1 1⁄2 C of the green frosting into one side of the medium piping bag
Scoop the purple frosting into the other side of the medium piping bag
Scoop the remaining green frosting into the large piping bag
Using the large piping bag, pipe a ring around the top of the cupcakes
Sprinkle some of the green sprinkles on top
Using the medium piping bag with the two frosting colors, pipe a medium size dollop in the middle of the frosting.
Carefully place the ‘spell book’ brownie on the frosting of the swirled frosting.
Serve and Enjoy!