Use cornstarch as you would flour when making dough. Dust your work surface, hands, rolling pin, and cutters. Line a cookie sheet or tray with parchment paper or a non-stick baking mat.
Knead the green fondant in your hands to make it soft and pliable and roll to ¼"/0.5cm thick.
Using a 2"/5cm round cookie cutter, cut out 48 Mickey ears.
Place the ears onto the prepared cookie sheet and leave to dry overnight or for 24 hours if possible.
Knead the yellow fondant in your hands to make it soft and pliable and roll to ¼"/0.5cm thick.
Using the Loki horns template (download links are above this recipe card), use a sharp knife to cut out 24 horns.
Place the horns onto the prepared cookie sheet and leave to dry overnight or for 24 hours if possible.
To make the bows, use a silicone bow mold and dust the mold with cornstarch each time you make a fondant bow. The bows should be about 2"/5cm wide.
Pinch off a small piece of black fondant and press into the bow mold cavity. Carefully remove from mold and set on the cookie sheet to dry overnight or for 24 hours if possible. Repeat to make 24 bows total.
TIP! Always make extra fondant decorations as backup!
When the fondant pieces have dried, lightly spray the silver spray onto the ears and bow to give a bit of a shine, and use the gold spray on the horns. Set aside to dry.
To make the cupcakes, preheat the oven to 180C/350F/Gas 4. Line cupcake pans with 24 cupcake liners and set aside.
Using an electric handheld or stand mixer, place the cake mix, butter, milk, and eggs into a large bowl and mix until combined and smooth.
Use an ice cream scoop to divide the cupcake batter between the liners - about three-quarters full.
Bake for 20 minutes or until an inserted toothpick comes out clean.
Leave to cool in the pan for about 5 minutes before transferring to a wire rack to cool completely before decorating.
To make the frosting, use an electric stand or handheld mixer and add the butter, powdered sugar, cream, and vanilla to the bowl.
Beat on medium speed until creamy and smooth and stiff peaks form.
Transfer 2 cup of frosting into a large piping bag fitted with a star tip. Set aside.
Pour the gold, black, and green sprinkles into a bowl and stir to mix.
Use a medium ice cream scoop to place a scoop of frosting on top of each cooled cupcake and use an angled spatula or knife to smooth and flatten slightly.
Dip into the Loki sprinkles mix to cover.
Using the prepared frosting bag, pipe a swirl of frosting on top of the sprinkles layer.
Place a black fondant bow in the center of the frosting.
Carefully place the horns behind the bow.
Finaly, place the green ears either side of the horns and bow.
Enjoy and Have a Magical Day!