Do I need a piping bag to make the brain?
No, but it helps. You can use a zip-top bag with the corner snipped off. The “brain folds” will be slightly less defined, still very zombie.
What tip should I use for brain frosting?
A round tip works best. If you have one, use a size like #10 or #12. No tip at all also works, just keep the opening about the width of a pencil.
Can I make these without food coloring?
Yes. The raspberry naturally turns the frosting a pinkish brain color. If you want extra creepy, add a tiny drop of red gel coloring, but it is optional.
How do I make them look more “zombie” and less “cute”?
After piping, lightly brush a little raspberry jam thinned with a few drops of water into the folds. It adds shadow and a fresh, gory shine.
Can I use a box mix?
Absolutely. Use your favorite chocolate cupcake mix and focus your energy on the frosting and piping.
Can I make the frosting ahead?
Yes. Make it up to 2 days ahead and store it airtight in the fridge. Let it sit at room temperature until soft, then rewhip for 30 to 60 seconds to bring back the fluffy, pipeable texture.
My jam has seeds. Is that ok?
Seedless jam is easiest because seeds can clog a piping tip. If all you have is seeded jam, either skip the tip and use a slightly larger opening, or press the jam through a fine mesh strainer before mixing it into the frosting.