I started with two store bought boxes of marble cake mix, per Loudoun's request. I used the mix to make four 8" round cakes. Based on advise from the internet, I made the 4 round cakes the night before I wanted to decorate, wrapped them in saran wrap and put them in the freezer. This locked in the freshness and made icing it so much easier!
I cut little semi-circles in 2 of the cakes, to create the figure EIGHT, for Loudoun's 8th birthday and the racetrack of the Mario Kart racetrack.
Of course Loudoun didn't have a shirt on. Typical in this household.
They each got to pick one bag of candy from the cake decorating store. Loudoun picked candy rocks to put around the racetrack. Avalon picked mini m&m's.
Once the cakes were assembled, it was time to get to decorating. The fun part!
We used crushed Oreo cookies, minus the filling, for the road. The kids split the cookies apart and tried many, many times to lick the frosting away. We donated quite a few cookies to the Avalon and Loudoun fund. I used toothpicks to create the guides for the figure 8.
Once the road was paved, we filled in the pit area with grass and painted lines on the road.
And finally, we placed the cake topper kit items (purchased on Amazon) around the track. Kit included 6 karts, trophy and finish line flags. We used mini Oreos as little tires in the pit.
The cake was really easy, the kids were able to contribute to so many parts of the decorating process, and we had such a blast doing it together!