Watermelon Cupcakes

Watermelon Cupcakes! Bright green cupcakes with buttercream that tastes like watermelon! Add mini chocolate chips for the watermelon seeds!

Watermelon Cupcakes! Bright green cupcakes with buttercream that tastes like watermelon! Add mini chocolate chips for the watermelon seeds!Kool aid has just revolutionized my buttercream.

You can take any flavor of powdered kool aid and add it to buttercream and voila – buttercream that tastes like watermelon, mango, pink lemonade, kiwi-lime! The flavors seem endless!

Plus it’s such a fun way to jazz up cupcakes for a birthday party – no longer an easy decision between vanilla or chocolate frosting.. and sometimes that’s not even easy :)

Watermelon Cupcakes! Bright green cupcakes with buttercream that tastes like watermelon! Add mini chocolate chips for the watermelon seeds!For the base of the cupcake, I used our favorite homemade white cake recipe and added leaf green food coloring from Wilton until I got the desired color.

To make things easier, use a box of white cake mix! Gasp! Yes I said it.

If kids are the primarily people who are going to be eating these cupcakes, we all know that they are more into the frosting than the cake, so if it saves you some time, use a box!

Our recipe will make 10-12 cupcakes (depending on how full you fill the muffin pan) and a box mix will probably make 20-24 cupcakes.

Watermelon Cupcakes! Bright green cupcakes with buttercream that tastes like watermelon! Add mini chocolate chips for the watermelon seeds!We got our super bright green cupcake liners at Party City – they really seem to match the cupcakes perfectly!

Watermelon Cupcakes! Bright green cupcakes with buttercream that tastes like watermelon! Add mini chocolate chips for the watermelon seeds!For the buttercream you’ll need 2 sticks of room temperature butter (I use unsalted), 1/2 cup vegetable shortening (this helps with stability, but you can substitute butter if you prefer), 3-4 cups of powdered sugar, 3/4 tsp of powdered watermelon kool aid, and red food coloring.

The watermelon kool aid actually doesn’t add much color to the buttercream (adds a lot of flavor though!) so you’ll need some red food coloring to help create a watermelon pink color.

I used the no taste red gel food coloring from Wilton, adding a little at a time, but it actually takes a lot to even just get the buttercream this color. I have not tried using pink food coloring so I don’t know if it would create the same color.

Don’t forget to add the mini chocolate chips! They complete the look!

Watermelon Cupcakes! Bright green cupcakes with buttercream that tastes like watermelon! Add mini chocolate chips for the watermelon seeds!

Watermelon Cupcakes

Yield: 10-12 cupcakes

Total Time: 1 hour

Ingredients:

Cupcakes - makes 10-12 cupcakes

  • 6 tbsp butter, softened
  • 2/3 cup sugar
  • 3 egg whites
  • 1/2 cup sour cream
  • 1 tsp vanilla extract
  • 1 cup + 2 tbsp all purpose flour
  • 1 & 1/2 tsp baking powder
  • 1/4 tsp salt
  • leaf green food coloring by wilton (or similar light green food coloring)

Buttercream

  • 2 sticks of butter, unsalted at room temperature
  • 1/2 cup vegetable shortening
  • 3-4 cups powdered sugar
  • 3/4 tsp of powdered watermelon koolaid mix
  • small about of red food coloring, to give the buttercream a pinkish color
  • mini chocolate chips

Directions:

Cupcakes

  1. Preheat the oven to 375º F. Place cupcakes liners to muffin pan.
  2. In a mixing bowl, combine the butter and sugar, beat using an electric mixer until fluffy. Add in the egg whites, beat again.
  3. Add in the sour cream and vanilla extract, mix by hand with spatula.
  4. In a smaller bowl, combine the flour, baking powder and salt, gently mix with a spoon.
  5. Gradually add half of the flour mixture to the wet ingredients, do not dump it in, rather take spoonfuls of the flour mixture and gently shake it over the wet ingredients, as if you were sifting in the flour. Fold in the mixture until no flour remains. Repeat with the other half of the flour, folding it in and scraping the sides and bottom of the bowl to incorporate everything.
  6. Add in the green food coloring, mix to incorporate.
  7. Divide the batter among the cupcake liners, filling each 1/2 full.
  8. Bake at 375º F for 5 minutes, then reduce heat to 350º will keeping the cupcakes in the oven and bake for 8-10 minutes or until a toothpick comes out clean when inserted into the center of a cupcake.
  9. Allow the cupcakes to cool before adding the buttercream.

Buttercream

  1. In a mixing bowl beat the butter and vegetable shortening with an electric mixer until smooth, about 2 minutes.
  2. Add in 2 cups of powdered sugar, mix by hand with a spatula.
  3. Add in more powdered sugar as you see fit, up to 2 more cups, mixing first by hand then with an electric mixer.
  4. Add in the watermelon kool aid powder and a small amount of red food coloring (to give the frosting a pinkish color), mixing one last time with an electric mixer.

How to assemble

  1. Place the buttercream in a large piping bag fit with a 1m wilton piping tip. Push the buttercream down into the bag. Pipe the buttercream onto the cupcakes, starting in the center of the cupcake, swirling out, and then swirling back into the center, progressively stacking the frosting as you get to the center.
  2. Add mini chocolate chips on top of the buttercream.

Watermelon Cupcakes! Bright green cupcakes with buttercream that tastes like watermelon! Add mini chocolate chips for the watermelon seeds!

39 comments

  1. These are absolutely adorable, and look so delicious too!

  2. I have made these before and just love them.  Was amazed at the flavor.  Thanks for sharing. 

  3. These look delicious, and your photography is gorgeous!!

  4. This is awesome! I’m so going to have to do this for my grad party!

  5. These have got to be the cutest cupcake I’ve ever seen! So clever!

  6. Love these. I will be trying them out at a picnic very soon.

  7. is there any way to make these without kool aid flavoring?

    • Hi Ashley! I don’t believe so – the koolaid powder gives the buttercream the watermelon flavor.

  8. How was the red food coloring used in this?

  9. I made these last weekend for a family reunion. In the interest of time I used a boxed white cake mix. This frosting is so delicious. Tangy and tart and mixed really well with the not too sweet cupcake. I loved them!!!! I am a huge citrus fan so I will use this frosting in different flavors. Thanks!!

  10. This is the powdered Koolaid that you would normally add sugar to, isn’t it?

  11. Thanks for the recipe, but not seeing when you add the green colouring. Want to do this with my girls club on Saturday.

  12. Can watermelon jello powder be used instead of the koolaid powder?

    • Hi Mindy! I’m not sure, but that’s a great question! If you try it, report back!

  13. Is there an alternative to sour cream? Thanks!

  14. I actually tried a flavored jello on a frosting and I really couldn’t taste the flavor (orange) and I think it was a little too sweet 😕 so I’m excited about trying the Kool aid…Thanks!

  15. When is the egg added?

  16. Hi can you use water melon flavor oil from dram lorann. As im from Australia and we can’t buy water melon kool aid

  17. Butter isn’t sold by the “stick” where I live. Can you please give an actual measurement for the butter? Thanks.

  18. Hi! How much frosting does one recipe make? And can you use salted butter?

  19. The frosting is waayyyyy too sweet, I would suggest using about half the amount of kool aid. However the cupcakes are delicious and these are so cute!

  20. Even if you don’t like using the watermelon flavoring, you can still tint the frosting.

  21. These are adorable! Certainly the hit of a summer BBQ.

  22. These are pretty! Very pretty for summer parties!

  23. These are absolutely adorable. I love that the buttercream is watermelon flavored! I love flavoring frosting with koolaid. So good !

  24. I can’t find watermelon Kool-Aid.  I’m using my own buttercream recipe and going to try Watermelon juice work in place of the milk.  Hopefully it works!

    • Hi Stacey! A lot of stores should carry the watermelon kool-aids packets, check by the rest of the small kool aid packets!

  25. The cupcakes are adorable!  However, the watermelon kool-aid was so difficult to find.  After 4 different grocery stores, I finally found it at Smart and Final.
    After the kool-aid hunt, turns out the  frosting was way too sweet.  If I make them again I will omit the kool-aid.  

    • Hi Anita! I’m sorry you had trouble finding the watermelon kool-aid. I have found it at Meijer and Walmart before. You can definitely use less kool-aid and less powdered sugar for a less sweet frosting.

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