This ooey gooey Slime Cake is as delicious as it is fun!
I used some McCormick Pure Lime extract and McCormick Neon food color to create the coolest “slime” you have ever seen! (Don’t worry, I will show you how easy it is to make… and how delicious it is to eat!)
To make this cake you will need:
1 box dark cake mix
McCormick black food color
6-inch round cake pans (3)
chocolate buttercream recipe (below) using Special Dark Cocoa
1 package vanilla instant pudding
McCormick neon food color
McCormick pure lime extract
small offset spatula
pastry bags
rotating cake stand
Being by preparing your chocolate cake. (You can definitely use a homemade chocolate cake if you prefer!) Add 1 teaspoon of black food color to the batter and mix to combine.
Equally divide cake batter between three 6-inch round cake pans. Bake according to directions.
Allow cakes to cool to room temperature and then level them so that they are all the same height.
Prepare buttercream.
Now prepare your “slime”. This has got to be the most fun part!! When I first had the idea to create this cake I could not image how to make an edible slime. My kids actually thought of using pudding! It’s the perfect texture and consistency!
Green Slime Pudding
Ingredients
- 1 box vanilla instant pudding, prepare according to package instructions
- ½ teaspoon McCormick Pure Lime Extract
- 4 drops McCormick Neon Food Color
Instructions
- Follow the instructions on the pudding box, adding the lime extract and food color to the mixture as you blend ingredients. Cover the mixture and place it in the refrigerator for at least an hour, or until you are ready to use it.
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Black Magic Buttercream
Ingredients
- 1 ½ cups 340 g butter, room temperature
- 4 cups (500 g) confectioners' sugar
- ¾ cup (94 g) dark cocoa powder
- 4 tablespoons (60 ml) heavy whipping cream
- 2 teaspoons (10 ml) McCormick Pure Vanilla Extract
- 1 pinch table salt
- 1 teaspoons (5-10ml) McCormick Black Food Color
Instructions
- In the bowl of an electric stand mixer fitted with whisk attachment, whisk butter and sugar on medium high speed until very pale and fluffy or about five minutes.
- Be sure to stop at least once and scrape the bowl.
- With the mixer off, add in dark cocoa powder, vanilla and salt.
- Turn mixer on low and blend for about 30 seconds.
- One tablespoon at a time add in heavy cream.
- Once all cream has been added and mixture is mostly combined, turn off the mixer and scrape down the sides of the bowl.
- Add in 1 teaspoon of black food color.
- Now turn the mixer onto medium-high to high and whisk for 3-5 minutes or until mixture is lighter and fluffier. (Keep an eye on the buttercream. You may want to add another teaspoon of black food color to reach the desired depth of color.)
- The frosting will be shiny and seem to have many large air bubbles throughout and this is exactly what we are going for. (You can smooth those out on the cake if so desired.)
Did you make this recipe?
Thank you for making my recipe! You took pictures, right? Well go ahead and post them on Instagram! Be sure to mention me @iambaker and use the hashtag #YouAreBaker.
Place some of your buttercream into a pastry bag.
Set one layer of cake on the cake stand or serving platter, then place that on top of your rotating cake stand.
Pipe buttercream around the edge of the cake. This is essentially creating a “wall” or a “dam” to hold in the slime pudding.
Add about 1/2 cup of slime pudding to the center and smooth out.
Place another layer of cake on top and then pipe out another ring of buttercream around the edge of the cake. Fill will approximately 1/2 cup of slime pudding.
Place the final layer of cake on top. Use the remaining buttercream to evenly cover the tops and sides of the cake. (You may have some frosting leftover, just store in an airtight container in the refrigerator for up to 3 weeks.)
Pour any remaining slime pudding over the top of the cake then chill until ready to serve. Best served within 24 hours of assembly and served chilled.
PRO TIP: For an extra awesome “drip” down the sides of the cake, add your slime pudding to a pastry bag and cut off a small portion of the tip. Then just drizzle the pudding down the side in a controlled drip. Easy peasy!
Isn’t that fun! This Slime Cake is definitely going to impress everyone who sees it!
Check out this video of my super Easy & Fun Slime Cake!
I only work with brands that I love! A big thank you to McCormick for partnering with me and allowing me to create cakes and delicious treats with there wonderful products. And thank YOU for supporting the brands that support iambaker!
Can you do a tutorial on making cake like this please? IMG_8735.jpeg
Made this cake for my sons science and slime party worked a treat had to hunt for the ingredients in the uk but overall happy with the end result
I made this cake and it turned out great. But the next morning when I went to get it out of fridge it looked horrible. Pudding had melted into black icing and it looked horrible.
Wicked idea! Would pistachio pudding work as well? Definitely keeping neon green food coloring but not sure if vanilla or almond extract? Nice addition would be gummy eyes and Albanese gummy worms.
Any tips for making a 2 layer half sheet cake from this recipe? Doing this as a birthday cake for my son’s Ghostbusters themed party. Thanks
The premise and assembly would be the same, but the proportions might be off. I haven’t made it in a half sheet cake so I am not sure of ingredient amounts.
This looked so interesting that it made me want to see more of what you create!