DIY : Marshmallow Cobweb Cake

Melted Marshmallow Spiderweb Cake for Halloween  |  by Carrie Sellman for

As seen on the cover of Country Living Magazine, October 2013!

We’ve come to the end of our new cake series,EEEK It’s Halloween Week!  A week full of innovative Halloween cakes, like none we had seen before.  A huge thank you to the the five bakeries who participated in this special week of Halloween inspiration!  Each is immensely talented and created such incredible designs.  I am thrilled to have featured them all!  If you missed any of them, you can find them all HERE.

So now that we’re officially in the Halloween spirit and inspired to bake, here is a super easy DIY for you to try at home.  There’s no piping, no painting and no wrong way to do it!  You just need marshmallows, two hands and some imagination!  It’s a creepy, crawly Marshmallow Cobweb Cake!  And I have a simple tutorial to show you how to do it!

How to Make a Marshmallow Spiderweb Cake for Halloween | Tutorial by Carrie Sellman for

You know how marshmallows get stringy when melted?  Well that makes for a super sticky, super easy spiderweb!

How to Make a Marshmallow Spiderweb Cake for Halloween | Tutorial by Carrie Sellman for

I think this cake would be a fun project, no matter your experience or skill level.  If you’re a medium to advanced baker, this cake will seem super easy and you’ll be finished in no time flat.  Beginners…. your end result will look more challenging than it actually was.  Bonus for you!  And you certainly don’t have to tell anyone how easy it was.  And if you really just don’t bake at all, why not try out the marshmallow technique on a plain white cake from the market.  It could be a fun way to get your hands a little sticky and surprise everyone, including yourself.  There’s really no right or wrong way for a spiderweb to look… so just go for it!

How to Make a Marshmallow Spiderweb Cake for Halloween | Tutorial by Carrie Sellman for

a DIY by Carrie Sellman


  • Cake
  • White Fondant
  • Marshmallows (8 oz)

STEP 1 : Cover your cake(s) in white fondant.

STEP 2 : Place marshmallows into a microwave-safe bowl.  Heat for 30 seconds.

STEP 3 : Stir marshmallows.  {Warning.  Hot marshmallows will burn.  And it hurts!}

STEP 4 : Keep stirring.

STEP 5 : Stir, stir, stir some more!  Stir until marshmallows are cool enough to touch.

STEP 6 :  This is where it gets messy.  Or fun, depending on how you look at things.  Using both hands, stretch a small glob of marshmallow out into a long, thin, stringy strand.  Way, way longer and thinner than what is shown above (it was hard to get a picture of this exactly… especially with marshmallow covered hands).

STEP 7 :  Start wrapping the stringy marshmallow around your cake.  Go up, down, around and around.  Diagonal.  Every which way.  There is no right or wrong way for a spider web to look.  Just start wrapping.  Go light at first until you get the hang of it.  Less is more!  And thinner strands look better in the end.

STEP 8 :  Continue to pull, stretch and drape marshmallow strings.  Going every direction way you possibly can.

STEP 9:   Cover second tier in marshmallow strings.  Stack both tiers together.

STEP 10 : Add additional marshmallow strings to both tiers, draping some from one tier to the next.  Add a spider with long, spindly legs.  And you’re done!

BAKERS NOTE : I should have taken pictures while making the spider.  My bad.  But he’s made of fondant and very straightforward.  One oval for his body.  A smaller circle for his head.  And eight very long, exaggerated legs to make him extra creepy!  Hey, a big spider had to be responsible for such a crazy cobweb!

ADDITIONAL NOTE :  I realize I could have written this tutorial with much fewer steps.  But I was having fun with sticky marshmallows and my new chalkboard backdrop!  What to do you think?  Do you like it?  Want to see more of it in future posts?

How to Make a Marshmallow Spiderweb Cake for Halloween | Tutorial by Carrie Sellman for

I hope you’ve enjoyed Halloween Week here on the blog!  And I hope you give my creepy, crawly Marshmallow Cobweb Cake a try!  I think even the kiddos would enjoy this tutorial.  Just make sure the marshmallow is cool enough for them to handle safely and be prepared to clean up some sticky hands.  And faces.  And tables.  You get the idea!


UPDATE: I was tremendously honored to work with Country Living Magazine on their 2013 October issue.  As it turns out, they enjoyed playing with melted marshmallows too! I’m honored that my sticky cobweb concept made the cover!


Now, give my super easy Monster Eye Cake a try.

How to make a Monster Eye Cake for Halloween | Tutorial by Carrie Sellman for


Then check out my super easy Witch Hat Cupcakes.
A fun little project with cupcake liners!

How to make witch hat cupcakes for Halloween | Tutorial by Carrie Sellman for


Find all of our Halloween ideas and tutorials in our Halloween Gallery!

DIYs and Cake Tutorials on

Carrie Sellman , Founder & Editor

Carrie Sellman is the Founder & Editor of The Cake Blog. Her work has been published in BRIDES Magazine, Country Living Magazine and featured online at People, Today, Cosmopolitan, Glamour, Redbook, Real Simple, TLC, The Cooking Channel and more.



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