1 ½cupsFresh blackberriesI cut them into smaller pieces
22dropsDark navy blue food coloringTo get the dark color
Frosting
1cupUnsalted butterroom temperature
5-6cupsPowdered sugarsifted
½cupBlackberry pureemade by blending fresh blackberries and straining out the seeds
1tspVanilla extract
1tspLemon zest
PinchSalt
Instructions
Cake
Preheat oven to 350°
Grease and flour two 9-inch (23cm) round cake pans or line them with parchment paper.
In a medium bowl, sift together the flour, baking powder, baking soda, and salt. Set aside.
In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.
Add the eggs one at a time, beating well after each addition.
Stir in the vanilla extract.
Gradually add the dry ingredients to the wet ingredients, alternating with the buttermilk, beginning and ending with the dry ingredients.
Add the food coloring (this is totally not necessary though and I recommend skipping).
Mix until just combined.
Gently fold in the fresh blackberries until evenly distributed throughout the batter.
Divide the cake batter evenly between the prepared cake pans.
Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center of the cakes comes out clean.
Remove the cakes from the oven and let them cool in the pans for 10 minutes before transferring them to wire racks to cool completely.
Frosting
In a large mixing bowl, beat the softened butter until smooth and creamy.
Gradually add the sifted powdered sugar, blackberry puree, vanilla extract, and salt, beating until smooth and creamy.
Adjust the consistency by adding more powdered sugar if too thin, or more blackberry puree if too thick.
Assembly
Once the cakes are completely cool, place one cake layer on a serving plate or cake stand.
Spread a layer of blackberry buttercream frosting evenly over the top of the first cake layer.
Place the second cake layer on top and frost the top and sides of the cake with the remaining blackberry buttercream frosting(usually 3 or 4 cake layers are used).
Decorate (Optional)
Garnish the top of the cake with fresh blackberries, lemon zest, and mint leaves for a beautiful presentation.
Notes
This recipe does NOT even come close to the photo! First of all, I don't see why adding in food coloring is even necessary, and i would skip that part next time. I did not have navy blue, so I used red and blue and it came out grey on the outside - might be more blue once I cut into it. It would have been perfectly beautiful remaining uncolored. Also, I switched the frosting recipe from the original because it did not make enough. I added more blackberry puree (original was 1/4 cup), twice the amount of butter and powdered sugar, and the lemon zest. I may have chosen to add some lemon juice, but did not try that. The cake layers came out very thin, and you would need to double to make the 4 layers shown in the photo. Still waiting to actually slice and taste at this writing.