Blackberry Cake Recipe

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This Blackberry cake is soft and moist and has a fluffy lemon blackberry buttercream frosting. The lemon juice cuts the sweetness and brightens up the whole cake. You’ll enjoy every bite as it hits your taste buds; sweet, tart and tangy. And of course the fresh blackberries were plump, juicy and wonderful!

I made this blackberry cake for my niece’s birthday and it was…good and so pretty (with decor inspiration from Allie)! Then I kept working on the cake, adding more lemon and the results were fantastic. Thankfully another niece was having a birthday the following weekend so it became her birthday cake.

This was much safer than leaving the cake at home with me, alone – with just the cake and I – and a fork. No one even noticed that I had taken out a slice to photograph it and then carefully replaced it and patched the frosting #smooth. My family was completely smitten with this cake!

Blackberry Cake Ingredients:

6 large eggs, room temperature
1 cup granulated sugar
1 cup all-purpose flour *measured correctly
1/2 tsp baking powder

Simple Lemon Syrup:

3/4 cup warm water
1 Tbsp granulated sugar
4 Tbsp Lemon Juice (from 1 large lemon)

Blackberry Frosting Ingredients:

3 cups powdered sugar
3 sticks (1 1/2 cups) unsalted butter, room temperature
8 oz Cream cheese, softened at room temperature
1/2 tsp salt (I used fine sea salt)
2 packages (6 ounces each) blackberries, divided (1 cup for frosting, 1 cup sliced for layers, 6 berries for decor).
2 Tbsp fresh lemon juice from 1 medium lemon
Crystal sprinkles, optional

How to Make the Blackberry Cake:

Watch the video before you get started:

2. Whisk together 1 cup flour and 1/2 tsp baking powder then sift this mixture into fluffy egg mixture one third at a time. Fold with a spatula with each addition just until incorporated. Scrape spatula from the bottom to catch any pockets of flour and stop mixing when no streaks of flour remain. Do not over-mix or you will deflate the batter.

3. Divide evenly between prepared cake pans (it helps if you have a kitchen scale to weight the pans). Bake at 350˚F for 23-28 minutes (my oven took 25 min), or until top is golden brown. Remove from pan by sliding a thin spatula (here’s the one I love for cakes) around the edges then transfer to a wire rack and remove parchment backing. Cool cakes to room temperature then slice layers equally in half with a serrated knife.

How to Make Lemon Blackberry Frosting:

1. Combine 2 Tbsp lemon juice with 1 cup blackberries in small saucepan. Simmer 6-7 minutes or until berries easily mash up with a fork then turn off heat. Strain through a fine mesh Strainer, pushing the blackberries through with a spatula until only seeds are left in strainer. Discard seeds and set the puree aside to cool completely to room temp (you should get 5 Tbsp puree).

2. In the bowl of an electric stand mixer fitted with whisk attachment, cream together 3 sticks butter, 3 cups powdered sugar and 1/2 tsp salt on low speed until combined, scraping as necessary. Increase speed to medium-high and beat until white and fluffy (2 to 3 min).

3. Add cream cheese 1-piece at a time and mix until combined then continue to beat 2 min until fluffy, scraping down the bowl as needed. With the mixer on, drizzle in blackberry syrup 1 Tbsp at a time then beat another minute.

How to Assemble Blackberry Cake:

1. Slice 1 cup blackberries and set aside. Make your lemon syrup by combining 3/4 cup warm water, 1 Tbsp granulated sugar and 4 Tbsp Lemon Juice.

2. Place first cake layer on serving platter cut-side up. Brush with 1/4 of the lemon syrup. Spread frosting over the top and layer with 1/3 sliced berries. Repeat with remaining layers placing the final layer cut-side-down, then frost the top and sides. (Tip: For the smoothest results, reserve flattest cake-layer for the top)

3. Pipe remaining frosting onto cake. For the roses, I used a closed star Wilton 2D tip (here’s a tutorial I created awhile back for how to pipe frosting roses). Decorate with remaining blackberries. I sprinkled with sugar crystals since it was my niece’s princess party birthday cake :).

Blackberry Cake Recipe

4.81 from 92 votes

Author: Natasha Kravchuk

This blackberry cake is soft and moist and has a fluffy lemon blackberry buttercream frosting. The lemon juice cuts the sweetness and brightens up the whole cake.

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Prep Time: 1 hour hr 30 minutes mins

Cook Time: 32 minutes mins

Total Time: 2 hours hrs 2 minutes mins

Ingredients 

Servings: 12 slices

Cake Ingredients:

• 6 large eggs, room temperature
• 1 cup granulated sugar
• 1 cup all-purpose flour
• 1/2 tsp baking powder

Simple Lemon Syrup:

• 3/4 cup warm water
• 1 Tbsp granulated sugar
• 4 Tbsp Lemon Juice, from 1 large lemon

Blackberry Frosting Ingredients:

• 3 cups powdered sugar
• 3 sticks, 1 1/2 cups unsalted butter, room temperature
• 8 oz Cream cheese, softened at room temperature
• 1/2 tsp salt, I used fine sea salt
• 12 oz blackberries
• 2 Tbsp fresh lemon juice from 1 medium lemon
• Crystal sprinkles, optional

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Instructions

Prep: Preheat Oven to 350˚F. Line bottoms of two 9" cake pans with parchment paper (do not grease the sides).

How to Make the Cake:

• In the bowl of an electric stand mixer fitted with whisk attachment, beat 6 large eggs 1 min on high speed. With the mixer on, gradually add 1 cup sugar and continue beating 8-10 min until thick and fluffy.
• Whisk together 1 cup flour and 1/2 tsp baking powder then sift this mixture into fluffy egg mixture one third at a time. Fold with a spatula with each addition just until incorporated. Scrape spatula from the bottom to catch any pockets of flour and stop mixing when no streaks of flour remain. Do not over-mix or you will deflate the batter.
• Divide evenly between prepared cake pans and bake at 350˚F for 23-28 minutes (my oven took 25 min), or until top is golden brown. Remove from pan by sliding a thin spatula around the edges then transfer to a wire rack and remove parchment backing. Cool cakes to room temp then slice layers equally in half with a serrated knife.

How to Make Lemon Blackberry Frosting:

• Combine 2 Tbsp lemon juice with 1 cup blackberries in small saucepan. Simmer 6-7 minutes or until berries easily mash up with a fork then turn off heat. Strain through a fine mesh strainer, pushing the blackberries through with a spatula until only seeds are left in strainer. Discard seeds and set the puree aside to cool completely to room temp (you should get 5 Tbsp puree).
• In the bowl of an electric stand mixer fitted with whisk attachment, cream together 3 sticks butter, 3 cups powdered sugar and 1/2 tsp salt on low speed until combined, scraping as necessary. Increase speed to medium-high and beat until white and fluffy (2 to 3 min).
• Add cream cheese 1-piece at a time and mix until combined then continue to beat 2 min until fluffy, scraping down the bowl as needed. With the mixer on, drizzle in blackberry syrup 1 Tbsp at a time then beat another minute.

How to Assemble Blackberry Cake:

• Slice 1 cup blackberries and set aside. Make your lemon syrup by combining 3/4 cup warm water, 1 Tbsp granulated sugar and 4 Tbsp Lemon Juice.
• Place first cake layer on serving platter cut-side up **. Brush with 1/4 of the lemon syrup. Spread frosting over the top and layer with 1/3 sliced berries. Repeat with remaining layers placing the final layer cut-side-down, then frost the top and sides.
• Pipe remaining frosting onto cake. For the roses, use a closed star Wilton 2D tip. Decorate with remaining blackberries and sprinkle sugar crystals if desired.

Notes

*Divide berries as follows: 1 cup for frosting, 1 cup sliced for layers, 6 berries for decor
**Tip: For the smoothest results, reserve flattest cake-layer for the top)

• Full Nutrition Label
• Nutrition Disclosure

Course: Dessert

Cuisine: Russian

Keyword: blackberry cake

Skill Level: Medium

Cost to Make: $$