Watermelon Cupcakes

Watermelon Cupcakes: nobody will know these started from a boxed mix! Super cute and fun!
**photos edited January 2015**
We have been having a fantastic summer so far. I am so lucky to live near King’s Island, and have season passes. Between riding roller coasters and spending time at the water park, there is little time for much else in my day.
I’m exhausted.
However, another favorite thing we enjoy in summer is watermelon. We eat a whole melon every week in the summer. Actually, I cut a melon in the morning and it’s gone by bedtime, but I don’t buy another one for a week, or at least until my next shopping trip.

I really wanted to only use fresh watermelon juice in the frosting, but the flavor didn’t “burst” enough for me. So I added in 1/2tsp of watermelon-cherry Koolaid mix (the dry stuff). If you have access to watermelon flavoring (I was too lazy to go to the store to buy it), that would be a great substitute as well.

However, I must say, these tasted perfect. The lime flavored cupcake was so slight, but just enough to give a good base flavor. The melted white chocolate hardened and gives a little texture to your bite. I loved these.
Want more cupcake inspiration? Check these favorites out!
Chocolate Malt Cupcakes
S’mores Cupcakes
Cherry Almond Cupcakes
Kiddie Cocktail Cupcakes
Check out my Cakes and Cupcakes Board on Pinterest 

Watermelon Cupcakes

Yield: 24


For the cupcakes:

  • 1 box (18.25oz) white cake mix
  • 1 box (3oz) lime Jello (not sugar free)
  • 3 egg whites
  • 1/3 cup canola oil
  • 1 1/4 cup water

For the Topping:

  • 8oz white chocolate, melted
  • 1/2 cup butter, softened
  • 4 cup powdered sugar
  • 1/2 tsp Koolaid powdered mix (watermelon flavor)
  • 3-4 Tbsp milk
  • 3/4 cup mini chocolate chips


  1. For the cake, add cake mix, jello, egg whites, oil and water in a mixing bowl. Beat 2 minutes until blended. Fill cupcake liners 2/3 full and bake in a 350 degree oven for 15-18 minutes. Do not overbake. Allow to cool completely.
  2. When cooled, spread melted white chocolate over top of each cupcake. While that sets, begin your frosting.
  3. In mixer, beat butter with powdered sugar, Koolaid mix and milk. Beat for about 3-5 minutes until fluffy and smooth. Using a decorator bag and tip (I used 6S), pipe frosting on each cupcake and immediately sprinkle with chocolate chips. ENJOY!

MAKING THIS RECIPE? Share it with me on Instagram using the hashtag #ShugarySweets so I can see what you're cooking up in the kitchen!

Watermelon Cupcakes: nobody will know these started from a boxed mix! Super cute and fun!
Adorable Watermelon Cupcakes

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58 comments on “Watermelon Cupcakes”

  1. Those are so very cute!!! I have a small confession…I don’t really like watermelon in any form! But for you I would try the cupcake…maybe my taste buds have changed? With all the chocolate and lime, I bet I would like it!! Funny thing is that I love the smell of the yankee candle watermelon scent:-)

  2. These are so so cute! Perfect summer cupcakes 🙂

  3. These look fantastic! You are so lucky to be enjoying summer. It’s gross and rainy here =o(

  4. How adorable are these? I bet these would get my kid to eat watermelon, ha. Such a great idea Aimee!

  5. Too cute and great idea with the watermelon-cherry Koolaid mix – now THAT will make the flavor pop!

  6. So fun! My girls will love these cupcakes! Thank you for sharing, Aimee!

  7. These look absolutely superb and i bet they are very refreshing. Going to give these a try at the weekend.

  8. I LOVE these! These are adorable. We love watermelon, it’s just what you eat in the summer, these cupcakes are perfect. I love Kings Island! Lots of memories there. I actually live “just down the road” in Batavia. Hope to get up to the waterpark this summer!

  9. These are so pretty! What a wonderful treat to make for my next picnic. Thanks so much for sharing at Mix it up Monday 🙂

  10. These look darling, I might have to try them for the fourth of July!


  11. these are just too cute!! i saw them and it actually brought a smile to my face 🙂

  12. I love the chocolate chips standing in for watermelon seeds! SO creative.

    • Can’t be responsible for that one, I’ve seen it before. Most times it’s been inside a strawberry cake decorated with green frosting. I just went the other way around!

  13. LOVE how you used koolaid to flavor (and add color) to the frosting. That opens up so many possibilities! Thanks for the inspiration. 🙂

  14. These look beautiful and I really like the flavors – perfect to summer

  15. These look delicious! I will for sure be making these this summer! Thanks for recipe!

  16. ok – these are too cute! I will Definitely! be making these!!

  17. These are so cute and delicious looking! If I ever throw a watermelon themed party, I would make these. Hope you have a great week! Come visit me and enter my giveaway going on.

  18. so pretty! watermelon definitely makes everything happy and summery 🙂

  19. Amazing presentation! I love the icing!

  20. So cute! Sounds like a great taste combo!

  21. these are So cute!!! you are being featured at this weeks Tasty Tuesday party. Stop by and grab a featured button and join in this weeks party tonight. http://www.nap-timecreations.com/

  22. These would be perfect for a backyard barbeque! They looked so yummy.
    Just so you know, I featured you on today’s Show Off Saturday.

  23. Anonymous

    My friends and family loved these! Thank you for a awesome recipe. I had no idea I could add jello into a cake

  24. I love this idea and plan to make them soon… while sporting watermelon nails (thanks pinterest). I’ll let you know if I do a post with that! 🙂

  25. Amiee, I just love the look of these little cuties!
    cant wait to make them (or have my daughter make them!)

  26. mmmmm, very interesting Idea
    that proves creativity has no limit 🙂

  27. Naomi

    why do you use only the egg whites?

  28. Naomi

    why do you only use the egg whites?

  29. Naomi

    sorry for all these questions but how should I melt the chocolate?

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  32. Patricia

    Curious….why can’t you use the sugar free lime jello? Could you use lime juice instead as well and maybe a drop of green food color? I have to watch the sugar in foods.

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  35. Love these! How adorable! I am thinking of giving these a try for Fourth of July!!

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