This Dirt Bike cake is a simple sheet cake. I used two boxes of cake mix, chocolate and vanilla. Colored my homemade buttercream icing green and tan and used the scraps from the cake after I leveled it for the hills.
I crushed some Oreo cookies to make the dirt on the track. I would use regular chocolate cookies next time. I had to remove all the white fatty goodness from the Oreo to make plain dirt. What a waste!
I love using fondant so I created a few characters to add a little ME to it. It took about 2 hours. I had a really hard time finding ideas for a dirt bike cake so I hope this helps you!