Size-WiseKids can have fun helping decorate this cake. At 14 servings, this crowd-pleasing cake is the perfect size for a birthday party.
Make AheadBake cake a day ahead, cool and cover with plastic wrap. Decorate the morning of the party, loosely covering boulders with plastic wrap to prevent them from drying out. Refrigerate until ready to serve.
Special ExtraUse additional cookie crumbs to cover sides of cake.