Blackberry Rhubarb Cake


Well friends, today I’m back with final rhubarb-inspired recipe. (You can check out all the rhubarb recipes here.) However, this time I’m taking a break from my favorite strawberry / rhubarb combo and testing out a different berry. Even though I really do like rhubarb on its own, there’s something about pairing it with a sweet berry that just makes it all the better. For this delightful treat, I’m pulling inspiration from this rhubarb cake recipe, but adding in some blackberries (and extra rhubarb) for even more flavor.

Blackberry Rhubarb Cake | Inspired by Charm

Blackberry Rhubarb Cake | Inspired by Charm

This cake actually reminds me so much of my past. From sweet treats at home, to a cafe I worked at during high school, rhubarb always found its way into muffins and cake. It’s such a unique flavor, and one you can only get certain times of the year. That instantly makes it special.


What I love about this recipe is that it’s insanely simple. I mean, seriously. So simple.

I also really like staple recipes like this one. If I have yet to convince you to give rhubarb a try, you can easily substitute any fruit or berry for the rhubarb and still have a super moist and delicious cake. This obviously is wonderful for an after-dinner dessert, but I find myself enjoying it most with a cup of coffee for breakfast. Perfection.

Blackberry Rhubarb Cake | Inspired by Charm

Let me show you how to make it.

Blackberry Rhubarb Cake

Here's what you will need:

For the cake:
1 1/4 cup sugar
1 teaspoon baking soda
1/2 teaspoon salt
2 cups all-purpose flour
2 eggs
1 teaspoon vanilla
1 cup sour cream

3 cups diced rhubarb
1 cup blackberries (chopped if they are on the larger size)

For the topping:
1 cup sugar
1/4 cup butter, softened
1/4 cup all-purpose flour
Ground cinnamon for dusting

Begin by preheating your oven to 350 degrees F. Grease and flour a 9x13-inch cake pan.

Next, prepare the cake. In a large bowl, mix together the sugar, baking soda, salt, and flour. Then stir in the eggs, vanilla, and sour cream until smooth. Finally, add in the rhubarb and blackberries. Pour into the greased cake pan and spread out evenly.

For the topping, in a smaller bowl stir together the sugar, butter, and flour until the mixture is crumbly. Sprinkle this over top of the cake; then dust lightly with cinnamon.

Bake for about 45 minutes or until a toothpick inserted near the center comes out clean.

Allow to cool (if you can); then devour!


Blackberry Rhubarb Cake | Inspired by Charm

You are really going to love this cake. If you happen to try it with different fruits and berries, let me know which combo you like best. I’m excited to try a few other flavors myself.

Blackberry Rhubarb Cake | Inspired by Charm

Enjoy and happy baking!

Inspired By Charm

Disclosure: This blog post may contain affiliate links as part of the Amazon Services LLC Associate Programs and other affiliate services. This means that receives a small commission by linking to and other sites at no cost to the readers.

Posted By at 4:32 PM
Tags: // // // // // //
Love it?
Share it!
You may also like...
Inspired By Charm Paint Colors

  • Crescent City, CA at

    Holy moly this cake is amazing! So easy to make and clean up from. The cake is exactly as described “wonderful for an after-dinner dessert, but I find myself enjoying it most with a cup of coffee for breakfast”. Used frozen blackberries and it still turned out great. Will be making again

  • Kiki at

    Yum, that looks so tasty! Blackberries are one of my favorite fruits. I can’t have gluten but I’d bet that this would be an easy sub with gluten-free all-purpose flour.

  • Lisa at

    I think that this is the recipe which will forge me to finally try rhubarb. 😉
    Do you think that blueberries would make a good substitution for the blackberries?

Post a comment (Need an avatar?)

* required fields