FAQs:
"You used boxed mixes in this recipe - can I use a scratch cake recipe instead?"
- Absolutely! You use my Favorite Vanilla Cake recipe, or even your own favorite white or vanilla cake recipe - just add 3-4 large drops of bright/lime green gel food color to the batter before baking.
"What if I've never added a drip to a cake before?"
- Don't stress! It's easier than you probably think it is! 🙂
- My biggest tips - make sure you measure your candy melts and heavy cream accurately. Too much/little of either may affect your drip consistency.
- Make sure you try a test drip first! Don't pour the ganache over your whole cake until you're confident in the consistency of your ganache.
- I loved this YouTube tutorial by Sugar&Sparrow when I was new to cake drips!
"Do I have to make the frosting from scratch?"
Not if you don't want to! You can substitute chocolate store-bought frosting and add black gel color, though the shade of black may be a little lighter.
Store-bought frosting is usually a little thinner than my recipe; add 2 Tablespoons of regular or black cocoa powder at a time until you reach a consistency that spreads and stays in place on the cake well.
Halloween Slime Cake
One of my MOST popular Halloween cake - a bright green drip and a Erlenmeyer flask make the perfect Halloween Slime Cake!
Servings: 16 servings
Calories: 752kcal
Equipment
- Baker's floured cooking spray (optional)
- cake scraper or pastry cutter (to smooth frosting)
- Squeeze bottle (or piping bag or a spoon - whatever you'd like to use to add the drip to your cake!)
- 6-inch (ish)/250mL Erlenmeyer flask (linked is the least expensive one I found online - it doesn't need to be able to withstand temperature fluxes; you're just using it to top the cake!)
Ingredients
Cake layers
- 2 white cake mixes
- 1 cup unsalted butter (16 Tablespoons or 2 sticks, melted & cooled - use instead of oil)
- 8 egg whites (no yolks-you can use egg whites from a carton to avoid wasting the yolks)
- 2 cups buttermilk (room temperature - use instead of water)
- 2 tablespoons clear vanilla extract
- 3-4 large drops bright/lime green gel food coloring (I used Americolor Electric green)
Black cocoa cream cheese buttercream
- 8 ounces cream cheese (one package, softened)
- 1 cup butter 16 Tablespoons or two sticks, softened
- 5 ½ -6 cups powdered sugar
- 1 cup black cocoa powder Available on Amazon; this post explains why I love it so much!
- 4-6 Tablespoons milk
- 1 Tablespoon vanilla extract
- 1/4 teaspoon salt (if using unsalted butter)
- 3-4 large drops black gel food color (use 5-6 large drops if using regular cocoa powder. I use black gel color pretty frequently, especially around Halloween, so I bought this large bottle from Americolor!)
Green Cake Drip
- 6 ounces White Candy Melts (I used Wilton Bright White)
- 3 Tablespoons heavy whipping cream (I used an incredibly thick Costco brand; you may need a bit less depending on the thickness of your cream)
- 2-3 drops lime green gel food coloring (Add last; after candy melts are melted with whipping cream!)
Instructions
Cake layers
- Preheat oven to 350°F. Line three 8-inch cake pans with parchment rounds, or grease with non-stick or baker’s floured cooking spray.
- Mix together all wet ingredients (butter, egg whites, buttermilk, vanilla, and gel food color) in a large bowl with a mixer or wire whisk. Blend in cake mixes for 30 seconds until moistened, then beat for 2 minutes until well combined.
- Divide batter evenly between the prepared cake pans (I find a kitchen scale helpful for this part). This guarantees your layers will bake to be the same height.
- Bake for 35-37 minutes (or until a toothpick comes out clean). Allow cake layers to cool for 10-15 minutes on a wire cooling rack before removing from pans – it helps to run an offset spatula or knife around the perimeter of the pan first. Cool completely before frosting. Set in the fridge or freezer to accelerate the cooling process if desired.
Frosting
- Beat together softened cream cheese and butter; slowly add in powdered sugar alternating with cocoa powder and milk until frosting reaches desired consistency. Add vanilla, black gel color, and salt if needed and beat until well combined.
- Once your cakes are cool, level them (if needed/desired). This can be done with a cake leveler or a large serrated knife and a ruler.
- Place a smear of frosting on your cake circle (to keep the cake from sliding while you decorate it) and center your first cake layer in the center of the circle. Spread the layer with frosting.
- Add your next cake layer on top, and repeat the process with your remaining cake layers.
- Now you're ready to crumb-coat . If you're unfamiliar with crumb-coating, it's just what it sounds like – spreading a thin layer of frosting over the entire outside of the cake to keep crumbs out of your final layer.
- Once your crumb coat has set (this takes about 5-10 minutes in the fridge), add your final layer of frosting and smooth. I like to use an offset spatula and bench scraper for this part. Once your cake is covered, place it into the fridge or freezer to set the frosting.
- This is a great time to make and color your ganache drip(s)!
Cake Drip & Decorations
- Place heavy cream and candy melts in a microwave-safe bowl (don't add the color yet!) and microwave on 50% power in 30-second intervals until smooth, stirring in between. Once the mixture is completely melted and smooth, add in the gel color and mix until the color is even.
- Once your ganache has cooled to a moderate temperature - it should be liquid but not hot so it doesn't melt your frosting - transfer it to a squeeze bottle or piping bag. You can use a spoon; it just won't give you quite as much control.
- Slowly drizzle candy melt ganache around the upper edge of your cake, pausing every inch or so to let more fall in a drip down the side of the cake. Pour a bit of ganache into the Erlenmeyer flask and set it on top of the cake. Smooth any gaps or bumpy spots with a small offset spatula. Place the cake into the refrigerator to set the drips!And you’re done! Cut in and enjoy!
Video
Notes
Please note nutrition information is an estimate and may not be exactly accurate.
Nutrition
Serving: 1slice | Calories: 752kcal | Carbohydrates: 98g | Protein: 9g | Fat: 38g
Related:
Black Cocoa Cream Cheese Buttercream
Did you make this recipe? Let me know how it went – or make my day and find me on Pinterest or on Instagram and tag @IntensiveCakeUnit in your photo!
What kind of black coloring do you use or recommend that will not make my coworkers teeth mouth or tongue black.
Hi Debbie! Unfortunately, I have yet to find a black food color that doesn’t leave *some* trace of color behind. My favorite is Americolor’s black gel color – it’s never turned my teeth black, just turns your tongue a bit purple 😉. I just updated this recipe to reflect my new favorite trick though – starting with a dark chocolate frosting made with black cocoa powder allows you to get to a pretty deep black without staining everyone’s mouths much at all! 😉🖤🖤🖤