How to Make Slime Cupcakes ~ Perfect for Halloween

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These gross slime cupcakes are the perfect Halloween dessert. They look gross and taste delicious!

3 slime cupcakes, front one is cut open with green slime oozing out.

With Halloween fast approaching the hunt for the perfect Halloween desserts and all scary and gross food ideas is on.

These slime cupcakes are a fun treat for kids and even adults who are looking for something a bit...gross. They'll get a surprise when they take a bite of these cupcakes - green slime will start to ooze!

Gross Cupcakes for Halloween

I love how these slime cupcakes came out!

The slime is made from dyed vanilla pudding. I love how easy it is to switch these up with changing the color of the slime.

These slime cupcakes are perfect for a Halloween party or just a fun Halloween night at home.

Tips for Making Slime Cupcakes

Closeup of cut in half green slime cupcake.
  • Make sure when cutting out the center of the cupcake, not to cut so deep that the cut all the way to the bottom. There needs to be some of the cupcake under the hole you cut so it doesn't leak.
  • You can change up the flavor of the cupcake or the pudding. If you change the flavor of pudding though, it will make it harder to dye a nice green color.
  • The cupcakes can be either homemade or store-bought undecorated ones.

Leftovers/Storage

If you are planning on bringing these to a party or gathering and you want to transport them, I'd suggest using some sort of cupcake carrier. This will help keep the frosting intact. If you just want a carrier to use a couple times, check out your local party store or Walmart, a lot of times they have plastic ones for cheap.

If you have any leftovers, you can store them at room temperature for 2-3 days. They can be stored in the refrigerator for up to 7 days.

Ingredients

Ingredients for slime cupcakes.

cupcakes: We used pre-baked chocolate cupcakes. You can either make homemade cupcakes or buy premade unfrosted cupcakes from the store.

vanilla pudding: this is the "slime" that you'll dye green and fill the cupcakes with.

milk: make sure to store it in the fridge until it's time to use. You'll mix it in with the pudding mix.

buttercream frosting: vanilla buttercream frosting is used and it pairs nicely with vanilla pudding and chocolate cupcakes.

sprinkles and candy eyeballs: Use Halloween sprinkles and candy eyeballs to give your cupcakes a fun-themed look.

gel food coloring: make sure to use gel food coloring for the best results.

How to Make Slime Cupcakes

Make the green slime: In a medium bowl, empty the contents of the pudding mix and cold milk. Whisk together. Using the green gel food coloring, add in 2-3 drops. Whisk everything together for 2 minutes. Set it aside for 5 mins to set.

Milk and pudding mix in bowl.
Adding green gel food coloring to bowl of pudding mix.
Green pudding all stirred together.

Dye the frosting black: Mix half the frosting with brown food coloring until it is fully mixed in. Add a few drops of black food coloring and mix in. Add the other half of the frosting back into the black colored frosting and mix well to fully incorporate the color throughout.

Cupcakes with frosting next to it, frosting has brown food coloring added, but not mixed in.
Frosting is brown.
Spoon holding the black frosting.

Setup piping bags: Put the frosting into a piping bag fitted with a 1M tip. Add the green pudding mix into a separate piping bag and cut off the bottom.

Cupcakes on left, piping bag with black frosting and piping bag with green pudding on right.

Prepare and Fill Cupcakes: Cut the centers out of the cupcakes with a paring knife and add the slime (pudding) to each one. Put the top back on each cupcake and gently press down on each one.

Cupcakes with centers cored out.
Cupcakes with holes filled with green pudding.
Cupcake with tops places over the green pudding.

Decorate Cupcakes: Pipe black frosting onto the top of each cupcake and add sprinkles.

3 cupcakes with black frosting piped on, one with frosting being piped on and two without frosting.
Cupcakes top down frosted and decorated.

More Dessert Recipes

Slime cupcakes with the front one cut in half and oozing slime.

Green Slime Cupcakes

Course: Dessert
Cuisine: American
Keyword: cupcakes, Halloween, slime
Prep Time: 20 minutes
Total Time: 20 minutes
Servings: 18
Calories: 301kcal
Author: Jenny Blinkhorn
These are a fun green slime cupcake that oozes out a green vanilla pudding when cut or bitten into. A great treat for Halloween parties.
Print Recipe Pin Recipe

Ingredients

  • 18 prebaked cupcakes
  • 1 3.4 oz vanilla pudding
  • 2 cups cold milk
  • 2 cups Vanilla buttercream
  • Halloween Sprinkles
  • Mini candy Eyeballs
  • Electric Green Gel Food Coloring
  • Brown Gel Food Coloring
  • Black Gel Food Coloring

Instructions

  • In a medium bowl, empty contents of pudding mix and cold milk. Whisk.
  • Using the green gel food coloring, add in 2-3 drops. Whisk everything together for 2 minutes.
  • Set it aside for 5 mins to set.
  • Mix half the frosting with brown food coloring until it is fully mixed in.
  • Add a few drops of black food coloring and mix in.
  • Add the other half of the frosting back into the black colored frosting and mix well to fully incorporate the color throughout.
  • Put the frosting into a piping bag fitted with a 1M tip. Add the green pudding mix into a separate piping bag and cut off the bottom.
  • Cut the centers out of the cupcakes with a paring knife and add the slime (pudding) to each one.
  • Put the top back on each cupcake and gently press down on each one.
  • Pipe black frosting onto the top of each cupcake and add sprinkles.

Notes

The time doesn't include time for making the cupcakes.Β  You can use either premade and undecorated cupcakes or homemade ones.
Make sure to use the GEL food coloring for best results for the color.

Nutrition

Serving: 1g | Calories: 301kcal | Carbohydrates: 49g | Protein: 3g | Fat: 10g | Saturated Fat: 3g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 4g | Cholesterol: 4mg | Sodium: 241mg | Potassium: 91mg | Fiber: 0.4g | Sugar: 38g | Vitamin A: 66IU | Vitamin C: 0.1mg | Calcium: 90mg | Iron: 1mg

Make sure to "PIN IT" for later and follow Flour and Aprons on Pinterest for all the latest delicious recipes!

Pin image: top says "Super gross slime cupcakes" and bottom has a closeup of a cupcake cut in half.

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