It’s my birthday month (I swear, I’m not one of those people) but I figured I had to bring back these yummy desserts! This recipe for homemade funfetti cupcakes is probably the easiest hack ever – you won’t be tempted to go back to the box mix again. Plus, you can customize the colours of the sprinkles this way too!
You know I love a rainbow treat, and these homemade funfetti cupcakes are like a subtle rainbow. Since I’ve made them a few times, I’m also going to share both ways I’ve frosted them in the past.
This time, I went with the traditional funfetti icing, but check out how I’ve done a rainbow marble too.
This post was originally written June 10, 2016. It has been refreshed and republished March 25, 2022.
The original recipe came about because I happened to have a bunch of rainbow sprinkles and cupcake liners. Spoiler, I still had the leftovers all these years later (and luckily I’ve calmed down my impulse shopping ha).
To make homemade funfetti cupcakes, you need to add sprinkles to a batch of vanilla cupcakes! I’ve updated my recipe to make a batch of 12 cupcakes, so it should make the perfect amount for a muffin pan. Plus, you can always double it to get more!
Scoop the batter into a lined muffin pan, making sure each cupcake is filled about 2/3 high. Do not spray the tray or the liners, or the cupcakes will be extra greasy. Lightly tap (pick up and drop) the muffin pan so that the batter settles down a bit.
Bake for 18-24 minutes, until the tops are set and the centre is cooked.
You should end up with 12 perfectly flat cupcakes. For this newest batch, I made some funfetti frosting as well. About 2 cups of icing was enough to cover my cupcakes, but if you like a really high frosting, you might need a bit more.
Make Homemade Buttermilk
I’m always making cakes that call for buttermilk, and I don’t think I’ve ever bought buttermilk. Maybe the real stuff is better (?) but it’s really easy to make your own!
Simply measure a cup of milk (I use homo, but 1 or 2% is fine too) – then add either a bit of white vinegar, or lemon juice. The acidity will cause the milk to curdle.
I like to start my buttermilk and set it aside to bubble while I mix the other ingredients.
Marble Rainbow Frosting
The first time I made homemade funfetti cupcakes, I decorated them with a marble rainbow frosting.
I mixed up one batch of icing, and made it a bit runnier than normal (but regular consistency could have worked too). Then, I separated the frosting into 4 bowls and added different food colouring to each.
Once the colours were mixed, I plopped a spoonful onto each cupcake. I tried to make sure there was the same amount of icing from each colour on all the cupcakes, but I ended up with a bit more blue and green.
I loosely blended the colours using a butter knife, being careful to preserve the different colours and not mix them together. They all had their own unique look, and I thought it was super fun!
This time, I mixed up a batch of buttercream and once again, added some rainbow sprinkles.
Although this time, I was running out of my rainbow mix so added the single colours I had (blue, yellow and orange/black). The blue sprinkles made the cupcakes a bit bluer this time!
Imagine funfetti cupcakes with all red sprinkles for Valentine’s for Canada Day. Or green for St-Patrick’s Day! The possibility are endless :)
Homemade Funfetti Cupcakes
Check out this delicious recipe for homemade funfetti cupcakes. You can adapt the colours for any other occasion, and decorate them how you like!
- 1/4 cup (half a stick) softened butter
- 1/2 cup sugar
- 2 eggs
- 2 tsp vanilla extract
- 1/2 cup buttermilk (see post for how to make your own!)
- 1 cup flour
- 1/2 tsp baking powder
- 1/2 tsp baking soda
- 1/4 tsp salt
- 1/4 cup sprinkles
- Icing (approx 2 cups)
- Optional: food colouring
Preheat oven to 350ºF
Prepare buttermilk, set aside
In a small bowl, combine the flour baking soda, powder and salt
In a large bowl, beat the butter and sugar together
Add in the buttermilk and flour mixture to the big bowl, mix again
Scoop in desired sprinkles, and stir
Pour batter into a lined muffin pan
Bake for 18-24 minutes, until cupcakes are set
Remove from the oven and leave the cupcakes in the pan for a couple of minutes, then transfer to a wire rack to cool completely
Prepare icing and decorate as desired
See the post for tips on how to make rainbow marble icing, or funfetti icing!
I hope you enjoy these homemade funfetti cupcakes! Like I mentioned, it’s a simple concept, but totally customizable to what you want. Do you prefer the marble rainbow frosting or the funfetti vanilla one? PS: I used a 1M tip to make the rose-style, it’s really easy, but looks so fancy!
Let me know if you adapt the recipe sprinkle/frosting colour for a specific occasion :)