Faux Sponge Cake (made from real sponges!) - Have you ever wished for a piece of cake that had no calories?  Well, wish no more!  Believe it or not, these slices of cake are actually made out of ordinary household sponges.  They would make great gifts or party decorations.  Or use them as treats for a make-believe tea party!

Have you ever wished for a piece of cake that had no calories?  Well, wish no more!  Believe it or not, these slices of cake are actually made out of ordinary household sponges.  They would make great gifts or party decorations.  Or use them as treats for a make-believe tea party!

faux sponge cake

Project estimate:

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  • Sponges, $1 and up
  • Scraps of foam board, on hand
  • Paint, on hand
  • White silicone caulk, about $2 and up
  • Cake decorating kit, $1 and up
  • Hot glue, on hand

Total:  about $4 and up

faux sponge cake

With scissors, cut the sponges into the shapes you want. I wanted my slices to be double layers, so I cut two of each.

faux sponge cake

Cut a piece of foam board that is just a bit more narrow than the pieces of sponge. This will separate the layers and allow you to put frosting between them. Glue the foam board in the middle of the sponges, I used hot glue.

faux sponge cake

Paint the sides of the sponges. The easiest way to do this is to use a sponge brush and press the paint into the sponge. I painted the chocolate slices three times. The pink cake I used a pink sponge and only painted one coat because I wanted the pink to show through. Even if your sponge is the colour that you want your cake, paint it. It will look much more realistic.

faux cake frosting

Now you’re ready to frost your cakes. I would strongly recommend buying a dollar store cake decorating kit, accidents happen and the silicone will dry pretty hard. Use the silicone just as you would frosting.

faux sponge cake

I will not presume to tell you how to frost a cake. I will, however, tell you that the thicker you apply the “frosting” the longer it will take to set up.

faux sponge cake

Time to paint the frosting! I used acrylic paint that I purchased from the dollar store. The colour I used on the dark chocolate slice was Burnt Umber. For the frosting I added white for milk chocolate. For the white frosting, I didn’t do anything because the silicone is so realistic on its own.