Introduction: Rainbow Cupcakes in a Jar
Originally posted at: http://www.mommyknows.com/how-to-rainbow-cupcakes-in-a-jar
Step 1: What You'll Need
Preheat oven to 350f
What you'll need:
1 boxed white cake mix
1 can of white frosting
variety of Wilton icing colours
12 125ml (4oz) canning jars
Sprinkles
Step 2: Step 1:
Make the white cake as per the instructions on the box. Then divide the cake mix up into portions (you don’t have to be exact). Add colouring to the cake mix. I used: No Taste Red, Lemon Yellow, Teal, Royal Blue and Violet (most of the colours of the rainbow).
Step 3: Step 2:
Add about 1 tsp of each colour into the canning jars. Place the canning jars on a cooking sheet with about 1/4″ of water on it. Bake in the oven at 350f for 25-30 minutes.
Step 4: Step 3
Remove from oven and let them cool completely.
Once cooled remove the tops of the cupcakes to make room for frosting. Ice the cakes with the frosting and top with sprinkles.
Step 5: Enjoy!

Participated in the
Le Creuset Brunch Challenge
45 Comments
12 years ago on Introduction
Really pretty cakes! Nice DOF in the photos too!
Reply 12 years ago on Introduction
Thank you very much!
8 years ago on Introduction
OMG im totally going to make this!
11 years ago on Step 5
All I can think is Fairy Cakes! I'm saving this!
11 years ago on Step 5
Ah, what a good way to present the colorful cakes
11 years ago on Introduction
First off, thank you for the beautiful idea!
About how many of the 4oz jars would you say a box of batter would make? I plan on making these for a friend's going-away party in the colors of his new college, but I don't want to end up with too much left-over batter.
11 years ago on Introduction
wait... can you use like baby food jars?
11 years ago on Introduction
where can you get canning jars?(:
12 years ago on Introduction
Cool cupcakes for Memorial Weekend!
12 years ago on Introduction
FANTASTIC! i love these. way to make a simple treat extraordinary!
Reply 12 years ago on Introduction
Thank you!
12 years ago on Introduction
I made them too! I added a TON of dye and they came out super bright and pretty!
The only problem was, I couldn't find glass jars, so I had to make them the traditional way. This was nice, though, because it dyed the white wrapper the colors of the cupcake! Brought them to school and everyone adored them!
Reply 12 years ago on Introduction
These look great. In the past, i have put too much dye in stuff and you can actually taste a bitterness. I will have to retry. How did you fill the center with icing like that?
Reply 12 years ago on Introduction
These look fabulous cvale! Great colour :) Thanks for taking the time to comment and post photos.
12 years ago on Step 5
to enjoy can you get the cupcakes out or do you have to eats them with a spoon?
Reply 12 years ago on Introduction
Hi Haru,
Thank you for your comment. Yes, you have to eat it from the jar with a fork or spoon.
Reply 12 years ago on Introduction
sweeet making them when i get back on land
12 years ago on Step 5
So they're Jarcakes then?
Reply 12 years ago on Introduction
I suppose so ...
12 years ago on Introduction
Beautiful! The glass jars show off the colors so well.