Preheat the oven to 350 degrees Fahrenheit. Line a muffin tin with paper liners.
In a large mixing bowl, combine the cake mix with the ingredients listed on the box. I made a Duncan Hines recipe and it called for 3 eggs, milk and vegetable oil.
Divide the batter amongst the muffin tin, filling each cavity about halfway full. Bake for approximately 15-17 minutes. Cool in the pan for 5 minutes before moving to a cooling rack to cool completely.
While the cupcakes are cooling, we’ll make up the frosting. In the bowl to your stand mixer, beat the butter on high speed until smooth.
Add the powdered sugar, vanilla extract and heavy cream and start by beating on low until the sugar starts to mix in. Start increasing the speed until you end on high speed and the frosting is fluffy and smooth. Place 3-4 tablespoons of the white frosting into a disposable piping bag. You don’t need a tip for this one.
Place a ¼ cup of frosting into a small mixing bowl and then place another 3-4 tablespoons of frosting into a second mixing bowl. Leave whatever is remaining in the stand mixer bowl.
Add black food colouring to the first small mixing bowl. Add red food colouring to the second mixing bowl. Add green food colouring to the remaining frosting in the bowl to the stand mixer. Mix all the colours until they are fully combined.
Put the black frosting in a disposable piping bag. You will not need a tip for this one. Fit the 3rd piping bag with the Leaf Piping Tip. I used #67 but #69 will work too. Put the red frosting in this piping bag.
Fit the last piping bag with a 1A large piping tip. Place the green frosting in this one. Set everything aside while we prepare the strawberries.
Remove the stem from each strawberry. Slice the strawberry in half, lengthwise. Keep the two sides together as a pair.
We are now ready for assembly. Pipe the green frosting over the top of each cupcake.
Place one side of the strawberry on top of the green frosting. Pipe a dollop of black frosting, about the size of a ½ teaspoon on the wide end of the strawberry. Pipe tiny dollops of the white frosting around the edge of the strawberry. These will be your little teeth.
Use the red frosting (and the leaf tip) to pipe a tongue from the black frosting to the edge of the strawberry. Use the white frosting to pipe teeth on the opposite (or top) side of each strawberry.
Place the top strawberry into the black frosting, making a little strawberry mouth. Enjoy immediately.