A spooky Halloween cupcake recipe perfect for slime-loving kids, these Slime Monster Cupcakes are sure to be a hit at your Halloween festivities!
Halloween Slime Monster Cupcakes Recipe
Are your kids obsessed with slime?
These Slime Monster Cupcakes are a fun way to pay homage to every kids’ favorite hobby these days – SLIME! (This Edible Gummy Bear Slime recipe is always a winner!)
You can make these Slime Monster Cupcakes two ways – to just look like a slime monster perched on top, or you can actually fill them with “slime” (aka, dyed vanilla pudding).
The second option can be a bit messy, so be prepared! If serving at a Halloween party where people will be wearing costume, you might want to warn them about the slime inside first!
While we provided a recipe for homemade chocolate cupcakes, feel free to swap in a boxed chocolate cake mix. The real winner here is that delicious homemade buttercream frosting – which would be a crime to replace with the jarred stuff.
However, if you need a dairy-free alternative, check out Stacey’s Coconut Oil Frosting.
Ingredients for Slime Cupcakes
- 1 1/3 cups all-purpose flour
- 1/4 teaspoon baking soda
- 2 teaspoons baking powder
- 3/4 cup unsweetened cocoa powder
- 1/8 teaspoon salt
- 3 tablespoons butter, softened
- 1 1/2 cups white sugar
- 2 eggs
- 3/4 teaspoon vanilla extract
For the vanilla buttercream:
- 1 cup butter, softened
- 3-4 cups icing sugar
- 2 teaspoons vanilla extract
- pinch salt
- 2-3 tablespoons milk or heavy cream
- Green food dye, optional
For the decorations:
- 1 cup green candy melts
- 1 Tablespoon shortening or vegetable oil
- 24 large marshmallows
- 48 candy eyes
Optional Slime Filling:
- Prepared vanilla pudding
- green food dye
Tip: skip the slime filling or at least warn guests if serving at an event to prevent unexpected slime-costume disasters.
Kitchen Tools You May Find Helpful
How to Make Slime Cupcakes
Preheat oven to 375 degrees F.
Line a muffin pan with themed cupcake liners.
In a large bowl, sift together the flour, baking powder, baking soda, cocoa and salt. Set aside.
In a large bowl, cream together the butter and sugar until light and fluffy, about 2 minutes.
Add the eggs one at a time, beating well with each addition, then stir in the vanilla.
Add the flour mixture alternately with the milk; beat well. Fill the muffin cups 3/4 full.
Bake for 15 to 18 minutes, until a toothpick inserted into the cake comes out clean.
Place softened butter into a bowl and beat in 2 cups of icing sugar. Add 2 Tablespoons heavy cream and vanilla.
Add remaining icing sugar 1/2 cup at a time until you reach your desired consistency. Add food colouring, if using.
Spoon the frosting into a piping bag with no tip or a circular tip.
If adding a slime filling, dye the vanilla pudding green, and then scoop into a piping bag. Make a hole in the center of the cupcake and fill with the green pudding.
TIP: While you can use a knife to make a hole in your cupcakes, these handy Cupcake Corer tools make this step a breeze!
Swirl the frosting onto the cooled cupcakes.
Melt the candy melts with the shortening for 25 seconds, stir, and reheat if necessary.
Place a large marshmallow in the center of each cupcake and spoon 1-2 Tablespoons of the candy melts overtop. Use the back of a spoon to help the candy melts move if needed.
Repeat with the other ghost cupcakes. After each ghost has dried for about 5 minutes, attempt to attach the eyes – if the candy melts are still too soft, give it another couple minutes before re-attempting.
Pin these Slime Cupcakes on Pinterest:
Grab your free printable copy of our Slime Cupcakes for Hallowen:
Yield: 12
A spooky Halloween recipe perfect for Slime fans, these Slime Monster cupcakes have an optional slime filling!
Ingredients
- 1 1/3 cups all-purpose flour
- 1/4 teaspoon baking soda
- 2 teaspoons baking powder
- 3/4 cup unsweetened cocoa powder
- 1/8 teaspoon salt
- 3 tablespoons butter, softened
- 1 1/2 cups white sugar
- 2 eggs
- 3/4 teaspoon vanilla extract
For the vanilla buttercream:
- 1 cup butter, softened
- 3-4 cups icing sugar
- 2 teaspoons vanilla extract
- pinch salt
- 2-3 tablespoons milk or heavy cream
- Green food dye, optional
For the decorations:
- 1 cup green candy melts
- 1 Tablespoon shortening or vegetable oil
- 24 large marshmallows
- 48 candy eyes
Optional Slime Filling:
- Prepared vanilla pudding
- green food dye
Instructions
- Preheat oven to 375 degrees F.
- Line a muffin pan with themed cupcake liners.
- In a large bowl, sift together the flour, baking powder, baking soda, cocoa and salt. Set aside.
- In a large bowl, cream together the butter and sugar until light and fluffy, about 2 minutes.
- Add the eggs one at a time, beating well with each addition, then stir in the vanilla.
- Add the flour mixture alternately with the milk; beat well. Fill the muffin cups 3/4 full.
- Bake for 15 to 18 minutes, until a toothpick inserted into the cake comes out clean.
- Place softened butter into a bowl and beat in 2 cups of icing sugar. Add 2 Tablespoons heavy cream and vanilla.
- Add remaining icing sugar 1/2 cup at a time until you reach your desired consistency. Add food colouring, if using.
- Spoon the frosting into a piping bag with no tip or a circular tip.
- If adding a slime filling, dye the vanilla pudding green, and then scoop into a piping bag. Use a cupcake corer to make a hole in the center of the cupcake and fill with the green pudding.
- Swirl the frosting onto the cooled cupcakes.
- Melt the candy melts with the shortening for 25 seconds, stir, and reheat if necessary.
- Place a large marshmallow in the center of each cupcake and spoon 1-2 Tablespoons of the candy melts overtop. Use the back of a spoon to help the candy melts move if needed.
- Repeat with the other ghost cupcakes. After each ghost has dried for about 5 minutes, attempt to attach the eyes - if the candy melts are still too soft, give it another couple minutes before re-attempting.
These Slime Monster Cupcakes are perfect for Halloween and their sneaky slime filling is a fun surprise for little slime fans!
More of our favorite Halloween party recipes:
For more delicious Halloween recipes, check out our Cinnamon Bun Zombie Guts recipe or our Cute and Easy Halloween Spider Cookies.
