Blackberry Cake

5 / 5 (3 reviews)

Delicious lemon cake layers filled with a mascarpone buttercream, fresh blackberries and blackberry curd. 

By: Preppykitchen (via Preppykitchen)
Original Publish: Jun 26, 2018
Last Updated: Mar 1, 2026
Prep: 25 mins
Cook: 35 mins
Yields: 8, 8 people

Nutrition Facts

200 kcalCalories
2.6 gProtein
29 gCarbs
8.6 gFat
Finished Blackberry Cake

Ingredients

Instructions

  1. Preheat the oven to 350F. Butter and flour three 6-inch cake pans. Add on damp baking strips. Zest and juice a lemon. In a stand mixer, sift in the flour, baking powder, salt and sugar. Give it a whisk and set aside. In a large bowl, add egg whites, milk, lemon juice, lemon zest and sour cream. Whisk together. Add a paddle attachment to the stand mixer. Add in room temperature butter in cubes or pieces. Switch to a whisk attachment. On medium speed, beat for ½ of the wet mixture into the crumby dry mixture. Scrape the bowl down and add the remaining wet mixture. Beat until combined. Pour the batter into the pans. I use a kitchen scale for more precision. Bake for 33 - 36 minutes and/or until a toothpick inserted comes out clean. Let the cake layers cool in their pans for about 5 minutes, them dump them out onto a wire rack to cool to room temperature.

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Chef's Notes

NotesMaking components ahead.
You can make the curd a few days in advance and refrigerate it. Cake layers can be made ahead of time, wrapped and left at room temperature overnight or refrigerated for a few days. The buttercream should be made the day of assembly. 
 
What if you can’t find Mascarpone anywhere?!?
A while back I was making a cake with a mascarpone buttercream and realized mine had expired! I didn’t have time to go to the market so I followed Nigella’s advice for a reasonable facsimile and mixed the following ingredients together until combined. Make sure they are all at room temperature!

8oz cream cheese
1/4 cup heavy cream
2 tbs unsalted butter

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Reviews from the Original Source

Lisa ★ 5.0/5

Hi John! Loving this recipe & would love to try making them soon! I want to know if I can turn this cake recipe into cupcakes? How many grams for each cupcakes? Thanks a lot! Love from Malaysia

Hannah ★ 5.0/5

One of my favorite cakes!! Might be because I love blackberries ?

Jack ★ 5.0/5

I Loved this recipe so much!!! The curd might have been my favorite part.

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