Watermelon Mojito Cupcakes made from doctored cake mix and a mint frosting will brighten up any picnic or summer party. Not only do these cupcakes look like watermelon, they taste like it too thanks to some fresh watermelon puree added to the batter. Mini chocolate chips give the effect of watermelon seeds and add a hint of chocolate flavor.

Watermelon Mojito cupcakes on a picnic table.

The Fourth of July is nearly here. Can you believe it ? This summer is absolutely flying by. It feels like Memorial Day was just yesterday. But there are still many weeks ahead for enjoying watermelon.

My favorite way to enjoy watermelon is by sprinkling just a little salt on a slice. Sometimes the simplest things in life really are the best.

But sometimes something a little more original and special is called for.

Watermelon Mojitos Cupcakes Recipe

These Watermelon Mojito Cupcakes are a treat both kids and grown-ups will enjoy. To fully give the effect of a Mojito, the delicious summer cocktail with rum and mint, I added a little rum to the batter and rum extract to the frosting. But you could easily omit the rum from the batter or only add it to half of the batter.

Watermelon Mojito Cupcakes

Using a box of white cake mix, these cupcakes turn out super light, making them a great choice for an outdoor picnic. Because of the frosting, you will want to keep them in a cool place until serving. If left in the heat, they might turn into melted watermelon cupcakes and that wouldn’t be any fun. Wouldn’t be very pretty either.

Ingredients Needed

  • Box of White Cake Mix– use a regular-size box. I use either Duncan Hines or Betty Crocker.
  • Watermelon Puree– You’ll need to puree enough watermelon in a bleber to make 1 1/4 cups.
  • Egg Whites
  • Vegetable Oil
  • Light Rum– It wouldn’t be a mojito-flavored cupcake without the rum. ๐Ÿ™‚
  • Red Food Coloring– you will need 20 to 30 drops to get them watermelon red.
  • Mini Chocolate Chips– add chocolate flavor and look like watermelon seeds.
  • Butter– I use salted but you can use unsalted and add a pinch of salt.
  • Cream cheese– a combo of butter and cream cheese makes for an extra creamy frosting.
  • Rum and Mint Extract– give the frosting a mojito flavor.
  • Powdered Sugar
  • Green Food Coloring– use about 20 drops.
  • Milk– you will need just a touch of milk to thin the icing.
Cupcake with a bite taken out.

How To Store

Because of the cream cheese in the frosting, I like to store these cupcakes in the refrigerator. Unfrosted cupcakes can be stores at room temperature in an airtight container for 3 days.

Watermelon Mojito Cupcakes

More Watermelon Recipes

Watermelon Mojito Cupcakes Recipe

By Christin Mahrlig

Prep: 20 minutes
Cook: 20 minutes
Total: 40 minutes
Servings: 18
These Watermelon Mojito Cupcakes are a fun, festive way to celebrate summer. Chocolate chips added to the batter look like seeds and fresh watermelon puree gives the batter a hint of watermelon flavor. Topped off with a mint-flavored frosting.
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Ingredients

Cupcake

  • 1 box white cake mix
  • 1 1/4 cups watermelon puree made from putting about 2 1/2 cups diced watermelon in blender
  • 3 egg whites
  • 1/3 cup vegetable oil
  • 1 tablespoon light rum
  • 20-30 drops red food coloring
  • 2/3 cup mini chocolate chips

Frosting

  • 1/2 cup butter,, softened
  • 4 ounces cream cheese,, softened
  • 1/4 teaspoon rum extract
  • 1/2 teaspoon peppermint extract
  • 3 cups powdered sugar
  • 20 drops green food coloring
  • 1 tablespoon milk

Instructions 

  • Preheat oven to 350 degrees and line 18 muffin cups with cupcake liners.
  • Using an electric mixer, beat cake mix, watermelon puree, egg whites, vegetable oil, and rum on low speed until mixed together. Increase to medium speed for 2 minutes. Turn back to low speed and add in red food coloring. Stir in chocolate chips.
  • Divide batter between muffin cups and bake 16-20 minutes, until a toothpick inserted in the center comes out clean. Let cool.
  • To make frosting, beat butter and cream cheese with an electric mixer until smooth. Add extracts.
  • With mixer on low, gradually add in powdered sugar. Turn mixer to high and beat until smooth.
  • Turn back to low-speed and add green food coloring and milk. Turn to medium speed just long enough to get food coloring mixed in well.
  • Frost cupcakes using an offset spatula or pastry bag.

Nutrition

Calories: 311kcal | Carbohydrates: 45g | Protein: 2g | Fat: 14g | Saturated Fat: 7g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 3g | Trans Fat: 0.3g | Cholesterol: 21mg | Sodium: 238mg | Potassium: 46mg | Fiber: 0.5g | Sugar: 35g | Vitamin A: 319IU | Vitamin C: 1mg | Calcium: 69mg | Iron: 1mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Did you make this?Leave a comment below and tag us @spicysouthernkitchen on social media!

Originally posted July 2, 2014.

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23 Comments

  1. Gayle @ Pumpkin 'N Spice says:

    These cupcakes are gorgeous, Christin! Probably the best recipe I’ve seen in a while! Love the watermelon puree in the batter, too. Sounds perfect for the holiday weekend!

  2. Sarah@WholeandHeavenlyOven says:

    These cupcakes are just so so creative! I love anything watermelon pretty much all-year round so these cupcakes are definitely calling out to me! Love that gorgeous mint frosting and the pretty way you piped it! ๐Ÿ™‚

  3. Medeja says:

    The colors look just amazing! So fun!

  4. Ashley | Spoonful of Flavor says:

    What a great idea, Christin! These are too cute, I love the addition of the chocolate chips!

  5. Jenna says:

    I never would have thought of adding pureed watermelon to a cupcake before and I just love watermelon. These cupcakes look so cute.

  6. Arpita@ TheGastronomicBong says:

    Yummm… I absolutely love mojito… and these watermelon mojito cupcakes look gorgeous… love the colours and the flavours.. Superb!!

  7. Kamila Gornia | for passion-driven solopreneurs says:

    Wow , these are totally creative – I’d love to try one! ๐Ÿ™‚

  8. Jocelyn (Grandbaby Cakes) says:

    Holy moly are these so freakin adorable! In love! Pinning!

  9. Jessica @ www.caretakerskitchen.com says:

    These are adorable.

  10. Helen @ Scrummy Lane says:

    Now these have GOT to be the prettiest cupcakes I’ve seen in a long while – and the most creative. What a great idea to base a cupcake on a cocktail. I’m impressed!