Preheat the oven to 350 degrees Fahrenheit and line 2 cupcake pans with liners.

In a large mix bowl, stir together the cake mix, water, vegetable oil and eggs.

Pour the batter into the cupcake liners, filling them approximately 3/4 full.

Bake for 18-21 minutes until a toothpick inserted into the cupcakes comes out clean.

Cool completely on wire racks.

In a large mixing bowl, beat the butter until it's creamy, light and fluffy.

Gradually mix the powdered sugar into the butter mixture ½ cup at a time. Make sure that the powdered sugar is completely mixed in before adding more.

Turn the mixer speed to low and add in the heavy cream and vanilla extract.  Beat for approximately 30 seconds to 1 minute until the frosting is a good consistency.

Divide the frosting evenly into 4 bowls and dye them each a different vibrant color.

Place the frosting in a piping bag fitted with a grass icing tip.  Then pipe the “fur” onto each of the cupcakes. Start toward the outside of the cupcakes and work our way in.

Make 6 blue monsters, 6 red monsters, 6 green monsters and 6 orange monsters.

Then decorate the cupcakes with the candy eyes (various sizes and numbers) and use the Oreos (some whole and some cut in half) to make the months on the monsters.

Then the cupcakes are ready to serve and enjoy!