Dinosaur Bones S'mores Cake

Sometimes being in my kitchen is like a comedy of errors, nothing wanted to go right with this cake. Our air conditioner has been barely working for months and we had a heat wave in September during my son's party. It was 90°F and with no working air conditioner and 5 crock-pots running all day for the chili buffet, it was just a bit hot in the house. Which means the marshmallow cream for this cake melted. I was so frustrated by the end I forgot to take a good photograph of the cake, so please forgive the cellphone photo. I almost didn't post this recipe, but the cake was just so cool I had to share, even if it didn't turn out exactly how I wanted.


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Dinosaur Bones S'mores Paleontology Cake aka Jurrasicake

Ingredients for Cake Layers:

¾ cup butter 
1 cup white sugar 
3 eggs
2 teaspoons baking powder 
2 cups graham flour
1 cup milk 
1 teaspoon pure vanilla extract
2 teaspoons mild molasses 


Cinnamon (the birthday boy is allergic, so I left this out)


  • Preheat oven to 350°F. Line two 9 inch cake pans with parchment paper and grease the sides with butter.
  • In a mixing bowl cream butter, sugar, vanilla extract and molasses together. Add eggs one at a time and continue to mix.
  • Add baking powder and graham flour alternately with milk and mix well. 
  • Divide mixture evenly between the two cake pans and bake at 350°F for 35 - 40 minutes 

Ingredients for Marshmallow Frosting:

8 large egg whites, at room temperature
2 cups granulated sugar
½ teaspoon cream of tartar
teaspoon salt
1 teaspoon pure vanilla extract
confectioners sugar 

Necessary Tools:

Double boiler or saucepan and mixing bowl


  • Fill the bottom of double boiler with a few of inches of water and bring to a simmer over medium heat.
  • Combine egg whites, sugar, cream of tartar, and salt in a mixing bowl and combine by hand.
  • Transfer to double boiler, making sure water is not touching the bowl. Heat egg white mixture to about 120°F. Whisk constantly until sugar is dissolved, approximately 6 minutes.
  • Transfer egg white mixture to stand mixer. On medium, using the whisk attachment, whist for 1 minute. Increase mixer speed to high and whisk until stiff peaks form. This will take about 5 minutes. 
  • Add vanilla extract and whisk until well incorporated.

Before frosting the cake make sure the layers are completely cool or the frosting will melt

  • Remove of marshmallow cream and frost the top of the bottom layer. Place second layer on top.
  • Slowly add ¼ cup cocoa powder to remaining marshmallow cream, you may not need the entire amount. Mix by hand until incorporated.
  • If your icing falls due to over mixing or heat you can add confectioners sugar in small amounts until a similar consistency is reached. I ended up using about ½ cup.
  • If you're using dinosaur bones to decorate, remove a sizable chunk of the top layer and push bones gently in.
  • Frost top and sides of cake and decorate with chocolate rocks.
  • Serve immediately and enjoy!

This cake does not hold up well if not served immediately. The marshmallow cream melts and runs everywhere. My test cake left me with a puddle all over my fridge and it only sat for 2 hours.


Chocolate Rocks Candy Nuggets 1LB Bag or try your local grocery store bulk bins

Dinosaur Skeleton Fossil Playset: 12 Pieces

Update 26 January 2014 - It seems that not everyone is getting the same size figures I did when I ordered mine in August 2013 and the difference in size is causing problems. I originally ordered Rhode Island Novelty Assorted Dinosaur Fossil Skeleton 5-6" Figures, 12-Piece from ToysNGamesEtc. They are quite a bit smaller than currently listed in the description, closer to 3-4" and come in a small zipper bag with a blue edge (see photos below.) It took some time, but I finally found my original package of dinosaurs. Who knew a 2 year old could have so many hiding places for his toys? I've also updated my links above, I found another seller who has the same set I purchased last year. If you are still having trouble tracking these down try Dollar Tree or ToysRUs, I've seen similar products sold there on occasion. 


Recipe Inspiration

Toasted Marshmallow Frosting 


Edited 8 November 2013

Today is the one day I was planning on not spending all day on the internet, but I just got a phone call from my husband and apparently my cake made the front page of the internet.  Welcome fellow Redditors, thanks for stopping by to check out my cake.

Redditor AJam has dubbed this Jurrasicake and I think the name rocks (feel free to groan now)

As of 4pm CST there are over 500,000 views on Imgur. Thanks Reddit!

One of my Steepster friends pointed out this was also posted on I fucking love science

As of 9pm CST there are over 750,000 views on Imgur. Absolutely amazing!

The site has been going down off and on since about 6pm CST. Sorry about that, squarespace is working on the issue and hopefully it will be resolved soon. If you happen to be one of my regular readers, my Friday post has been postponed until the problem has been resolved. I'll keep you all updated via Twitter over the weekend.

Edited 9 November 2013

In 24 hours I've had over 940,000 views on imgur alone, if you add in the likes from I fucking love science that is over 1 million times my image has been viewed, liked, and shared. I'd like to thank everyone for the wonderful comments and messages you've posted. It has been so much fun reading them and hearing how many of you want to make this cake for someone special. If you do make this cake I would love to see photos so contact me through the blog and I'll let you know where to send them. If I get enough I'll do a compilation post at some point in the future.

Thanks for stopping by!

Jenn aka Short Sorceress