By Laur Published: October 8, 2011

Halloween is coming – make this Brain Cake for your party. This cake takes some time – so set aside an afternoon. The middle of the cake is filled with raspberry filling so when the cake is cut the blood and brains come gushing out – what could be better for your ghosts and goblins.



  • 2 Cake Mixes
  • 3 Cans Buttercream Frosting - or make from scratch
  • 2 Bags Mini Marshmallows
  • 2 Bags Powdered Sugar
  • Cake Dye Black and Red
  • Vegetable Oil For your hands
  • 12-16 oz. Raspberry Filling
  • 4-6 Tbls Dark Corn Syrup

Cooking Directions

  1. Bake Cakes - Now this depends on what size pan you are going to use. If you want a smaller cake you can use 8 or 9 inch round pans. I used a 12 inch round cake pan with 2 cake mixes.
  2. Remember to use parchment paper on the bottom of your pans for easy removal.
  3. Let cakes cool completely.
  4. Stack the cakes and now you are ready to begin to carve the shape of the cake - its best to use a sharp serrated knife.
  5. Now you have your cake shaped like a brain - remove the top layer and create a cavity in the bottom layer. This cavity will hold the raspberry filling. Do not dig all the way to the bottom - you want the filling to have a place to stay and not run out until it is cut.
  6. Once the cavity is dug out - fill it with the raspberry filling.
  7. Now put a layer of frosting on top of the bottom layer - then put top layer of cake back on.
  8. Cover the entire cake with frosting which will act as glue and will hold the fondant onto the cake.
  10. Place the marshmallows and the water in a large microwave-safe bowl. Microwave on high for approximately 1 1/2 minutes, until the marshmallows are puffed - use 15 second intervals. Stir the marshmallows until they are melted and smooth.
  11. Add 1 1/2 bags of the powdered sugar and stir until the sugar begins to incorporate and it becomes hard to stir.
  12. Put the fondant onto your powdered sugar dusted counter/board. Oil your hands with oil - this will help you through the sticky part of this process - start to knead the fondant like your making bread dough until it is nice and smooth adding more powdered sugar if needed along the way. You want it smooth with no lumps.
  13. Put dough into a ball and flatten into a disc. Put on a pair of gloves, with a toothpick put a small amount of black cake color - make it a light grayish color - keep folding the dough over itself and knead until the color is well incorporated with no streaks. Once the fondant is a smooth ball wrap the fondant in plastic wrap so it will not dry out. It is best to keep the fondant covered in plastic wrap while you work on this project.
  14. Pull off a piece of the fondant and roll between your hands like your making a snake. Place the first fondant strip down the center of cake to create the middle of the two hemispheres.
  15. TIP: If the fondant gets too dried out to work with add a very small drop of water and knead until smooth and soft again.
  16. Carefully place the fondant pieces with the end of the fondant strip on the cake and swirl the rest of the length around to create S and G shapes. Start the next piece of fondant next to the first piece and keep going until the cake is filled with brain clusters. Try to get the fondant as close to possible to the other pieces so you do not have any gaps. Each piece of fondant is creating a cluster of brain. You should vary the size and thickness to make it more realistic. My husband did one side while I did the other - and they actually looked similar - look at picture for reference.
  17. Do this last step right before the party - no more than 30 minutes beforehand. Use a spoon or butter knife to drip the blood into the cracks.
  18. There will also be a small area of white frosting in between the layers - simply drip some fake blood in these areas.
  19. Take 4-5 tablespoons of dark corn syrup and with a toothpick put some red cake dye into the corn syrup and mix around - use a small amount at a time to create the look you are going for.
  20. After you have the cake looking good then put a little more blood around the plate and bottom of cake - Have a Great Party! And take lots of pictures!

This Brain Cake is a lot of fun to make. Get your kids to help with the fondant and blood- they will have a blast! The kids as well as adults will love this cake. Please post your pictures.
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2 thoughts on “BRAIN CAKE

    • Thank You – I’m going to post the recipe tomorrow – you should try it! It’s great when you cut into it and the blood/brains comes pouring out onto the plate!

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