Go Back
+ servings
three rex dinosaur birthday cake

Three-Rex Birthday Cake

How to make your own easy Three-Rex cake for a dinosaur themed birthday at home!
No ratings yet
Prep Time 1 hour
Cook Time 30 minutes
Total Time 1 hour 30 minutes
Course Dessert
Cuisine American
Servings 16
Calories 250 kcal

Equipment

  • Electric mixer
  • Icing tip grass tip or star tip
  • Icing bags
  • Cake pan
  • bowls
  • spoons
  • Rubber spatula
  • Wax paper
  • Permanent marker
  • Scissors
  • Small dinosaur toys
  • Plastic plant leaf

Ingredients
  

  • 1 Box of chocolate cake mix
  • 3 Eggs
  • ½ cup Oil
  • 1 ¼ cup Water or milk
  • One can of white frosting
  • Green food coloring
  • 6 Oreo cookies

Instructions
 

  • Bake your cake according to the box cake instructions.
  • Cool cake completely.
  • Use wax paper to draw a number 3 you will use as a stencil to trace onto your cake. Cut out the number 3 with scissors and place it on top of your cake. Trace the number 3 onto the top of your chocolate cake with a sharp knife.
  • Carefully dig out the inside of your number three cake. Just dig out a shallow small amount of the chocolate cake.
  • Scrape out the cream from 6-10 Oreo cookies. Put the black cookie part of the Oreos in a ziploc bag and crush them, or crush them with your food processor. Sprinkle the cookie crumbs into the cut-out 3 on your cake.
  • Mix green food coloring with your white frosting. Or mix one drop of blue, yellow, and brown together for the same color seen in my photos. Put the icing in a piping bag with a star tip or grass tip and cover the surface of your cake surrounding the 3.
  • Decorate the top of the cake with small dinosaur toys and plastic leaves. Optionally, add mini chocolate eggs as 'dino eggs'.

Nutrition

Calories: 250kcal
Keyword Cake, Dessert