I am not going to lie. I have made this cake every weekend for the last three weeks. The weather has been so perfect here in Southern California that we have hosted backyard dinner parties with friends all month, and this Blueberry Lime Cake with Lime Buttercream Frosting was a hit at each event. This cake is as lovely as it is delicious! Blueberry and lime. Such a classic combination.
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Blueberry Lime Cake with Lime Buttercream Frosting

The Cake and the Frosting:

The base of this cake is a classic vanilla buttermilk cake. I added freshly grated lime zest and plenty of ripe blueberries to make this version the quintessential dessert for spring and summer. The frosting is a stunning buttercream made with fresh lime juice and zest…notice the green specks?

Blueberry Lime Cake with Lime Buttercream Frosting

To Decorate:

When it comes to decorating, I like to keep my cakes simple. I usually top them with fresh flowers or berries. To decorate this beauty I used lime slices, blueberries and a few random greens from my garden. As long as whatever you use for decoration is safe to be eaten you can place right on top of the cake. If you use something inedible I recommend placing a small circle of parchment paper under the decorations so they can be easily removed before serving.

Blueberry Lime Cake with Lime Buttercream Frosting


If you are fine eating gluten, have at it! But if you are one of my gluten free followers, I have two wonderful suggestions to make this cake gluten free but just as good: King Arthur’s Measure for Measure Gluten Free Flour is fabulous and found in most grocery stores. Jovial Gluten Free Pastry Flour is also wonderful and the grains in this flour are soaked for easy digestion!

The Recipe: Blueberry Lime Cake with Lime Buttercream Frosting

Tips and what you will need: I use two 9 inch cake pans for this recipe. Always line with parchment paper for easy removal from pans. I love my Kitchen Aid Mixer and vanilla paste!  You will need a microplane to zest the lime.

Blueberry Lime Cake with Lime Buttercream Frosting
Prep Time
20 mins
Cook Time
30 mins
Total Time
50 mins

Just a heads up, this Blueberry Lime Cake with Lime Buttercream Frosting is even better the second day!

Course: Dessert
Cuisine: American
Keyword: crowd pleaser, easy dessert recipe, party recipe
Servings: 12 servings
Author: Linda Spiker
The Cake:
  • cups all purpose flour
  • 3 teaspoons baking powder
  • 1 teaspoon sea salt
  • 1 cup butter , room temp (that's 2 sticks) plus 1 tablespoon for preparing pans
  • ¼ cup coconut oil, or baking oil of your choice
  • 1⅓ cup granulated sugar
  • 2 teaspoons vanilla paste or 1 teaspoon extract
  • 6 eggs, room temp
  • 1⅓ cup cultured buttermilk
  • 1 1/4 cups fresh blueberries, rinsed, dried and stems removed (plus more for decorating if desired)
  • zest of two limes
The Frosting:
  • 1/2 cup butter, room temp
  • zest of one lime
  • 3 tablespoons fresh lime juice
  • tiny pinch of sea salt
  • 4-5 cups powdered sugar
Cake Prep:
  1. Preheat oven to 350 degrees and place oven rack in center position
Prep pans:
  1. To prevent the cake from sticking you can use non stick pans, then use a paper towel to wipe sides and bottom of pans with soft butter. Dust each pan lightly with flour, OR fold a large piece of parchment paper in half twice. Use bottom of cake pan and pencil to trace a circle on parchment, then cut folded paper so you end up with two circles. Place parchment circles into the bottom of pans and spray with organic non stick spray. This is my favorite method. Set aside

The Cake:
  1. Combine flour, baking powder and salt, set aside
  2. Place butter, coconut oil, sugar and vanilla in mixer and mix until well combined
  3. Add eggs one at a time
  4. Alternate adding flour mixture with buttermilk until well combined, mix for one more minute
  5. Add lime zest and mix until incorporated
  6. Add blueberries and gently mix in by hand
  7. Pour equal amounts of batter into prepared pans, tap pans firmly on counter to take out any bubbles
  8. Bake for 25-30 minutes or until an inserted toothpick comes out clean
  9. Allow cakes to cool, gently remove from pans discarding parchment and then frost
The Frosting:
  1. Place softened butter, lime juice, zest, sea salt and 4 cups powdered sugar into a bowl and mix. If frosting is not quite thick enough add more sugar (up to a cup, I usually end up using almost 5 cups). If it's too thick add just a little more lime juice. When frosting is desired consistency, frost cooled cake.
  2. Top with your choice of decoration and serve


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