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    Home » Recipes » Sweet Recipes

    Rhubarb Crumble Cake

    Jun 9, 2019 | by Jennifer | Last Updated: Apr 1, 2022

    Jump to Recipe

    A lovely, rhubarb crumble cake, filled with fresh (or frozen) rhubarb and has a delicious and unique crumble topping.

    rhubarb cake on cooling rack, sliced

    I know there are a ton of rhubarb cakes on the Internet, but I wanted to add just one more to the mix for a couple of reasons.

    First, this was a lovely rhubarb cake and a great way to use your Spring rhubarb, but it is also a great way to enjoy all the Summer fruit, simply by changing up the fruit. This cake is versatile.

    Secondly, this cake has a really unique crumble topping and one that I think any baker would love to "discover" (if you haven't already), because it's one of those baking things that you can tuck away and use on other cakes or coffee cakes.

    Jump to:
    • Ingredient Notes
    • Cook's Notes
    • Top Tip
    • Recipe
    • Comments, Questions and Reviews

    Ingredient Notes

    Rhubarb - You'll notice the rhubarb I've used here is quite green. I have one rhubarb plant that is just really green, even when mature and ready to pick. Sure, the ruby red rhubarb is pretty, but that is usually the greenhouse, forced variety. Home garden grown rhubarb can be any colour from bright green to bright red and everything in between. Generally speaking the colour doesn't mean much in terms of sweetness. All rhubarb is tart :) I tend to think that thinner stalks of rhubarb are more flavourful, but I'm not sure there's any real evidence of that.

    So after all that, use whatever rhubarb you have, red or green, fresh or frozen. If starting with frozen rhubarb, allow a little extra cooking time for your cake.

    Brown sugar: This recipe specifies light brown or "golden" sugar. If you only have dark brown or old-fashioned brown sugar, you can use that without issue. Your cake with be a touch darker.

    Cook's Notes

    • The cake itself is what I would call almost a pound cake. Not quite as dense, lightly sweet and lovely and buttery. It's a great base cake for rhubarb and just about any fruit, for that matter.
    • This cake takes a while to bake! Mine took almost 1 hour and 30 minutes. Yours may take more or less than that. This is the kind of cake where you should start testing it about the one hour mark and then just keep cooking and testing until it's done.
    • So I mentioned the unique crumble topping above and what makes it unique is that it's not what you might expect by looking it. It's not a brown sugar/butter topping. It's made from a small amount of the cake batter, that gets mixed up with some cinnamon and some more flour, forming into a crumble mixture. As such, it delivers the crunchy, crumble, without adding a layer of butter and sugar on top. Not that there's anything wrong with that, it's just that sometimes it's nice to enjoy a cake that's not all that.
    • The above note is also why there is a sprinkling of sugar on top (and you thought it was just sugar on sugar :) I used white sugar on top, but I think brown sugar would have been a nice choice, too. You can use either.
    • This cake will keep well on the counter (well wrapped) for several days or you can also freeze it for up to 3 months.

    Top Tip

    While I made this as a rhubarb cake, this cake would be equally nice with just about any fruit. Try it with blueberries, raspberries, blackberries, peaches, apples and more.

    Recipe

    Rhubarb Crumble Cake

    A lovely, rhubarb crumble cake, filled with fresh (or frozen) rhubarb and has a delicious and unique crumble topping.
    Author: Jennifer
    5 stars from 7 ratings
    Print it Pin it + Collection Go to Collections Share by Email
    Prep Time 15 mins
    Cook Time 1 hr 15 mins
    Total Time 1 hr 30 mins
    Course Dessert
    Servings 12 servings

    Ingredients
     

    Cake Batter:

    • 1 cup + 2 Tbsp salted butter, at room temperature
    • 1 1/2 cups light brown sugar
    • 2 tsp vanilla extract, or vanilla bean paste
    • 5 large eggs
    • 2 1/4 cups all-purpose flour
    • 2 tsp baking powder
    • 3 cups rhubarb, fresh or frozen, diced

    Topping:

    • 7 Tbsp all-purpose flour
    • 1 tsp ground cinnamon

    Before baking:

    • 1 Tbsp light brown sugar, or white sugar
    Prevent screen from going dark

    Instructions
     

    • Preheat oven to 325F. Grease and 8-inch springform pan and line the bottom with a round of parchment paper.
    • In a large bowl with an electric mixer, or in a the bowl of a stand mixer, fitted with the paddle attachment, beat the butter, brown sugar and vanilla until light and fluffy, about 2-3 minutes. Add the eggs, one at a time, beating well after each addition and scraping down the sides of the bowl several times, as needed. Add the flour and mix, just until combined.
    • Remove 1/4 cup of the batter to a small bowl. Add the 7 Tbsp flour and 1 tsp cinnamon and stir together using a dinner knife, until it becomes a crumbly mixture. Set aside.
    • Fold the rhubarb into the rest of the cake batter, then spoon the batter into the prepared springform pan, spread to the sides and level the top. Evenly scatter the crumble mixture over-top of the batter, then sprinkle the top with 1 Tbsp of light brown sugar (or white sugar).
    • Bake in preheated oven for about 1 hour and 15 minutes to 1 hour and 30 minutes, but check and test regularly after the 1 hour mark and cover the top loosely with a sheet of aluminum foil if the top of the cake is browning too quickly. Bake until a tester comes out clean, as long as that takes. (*If starting with frozen rhubarb, cooking time will be slightly longer).
    • Remove from oven and cool for 15 minutes in the tin, then remove from pan and cool completely on a cooling rack.

    Notes

    Be sure to read the Ingredient and Cook's Notes above the Recipe Card, for more tips on making this cake.

    Nutrition

    Sodium: 198mg | Calcium: 102mg | Vitamin C: 2mg | Vitamin A: 698IU | Sugar: 28g | Fiber: 1g | Potassium: 259mg | Cholesterol: 125mg | Calories: 408kcal | Trans Fat: 1g | Saturated Fat: 12g | Fat: 20g | Protein: 6g | Carbohydrates: 51g | Iron: 2mg

    Nutritional information provided for general guidance only and should not be relied upon to make personal health decisions.

    Course Dessert
    Cuisine American, Canadian
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    Meet the Author:
    Hi! I'm Jennifer, a home-cook of many years and a lifelong seeker of delicious food! I'm an equal opportunity eater. I enjoy eating all the foods!

    I love to share the classic recipes that I have enjoyed for years, as well as newer discoveries, that have become fast favourites.
    More about me here ...


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    Reader Interactions

    Comments

    1. Leanne | Crumb Top Baking says

      June 11, 2019 at 11:49 am

      5 stars
      I'm pretty sure I wouldn't have any trouble storing this one. It wouldn't last past 24 hours in my house! And I would probably eat most of it. Crumble cake is appropriate for breakfast, right!? ;)

      Reply
      • Jennifer says

        June 11, 2019 at 7:53 pm

        Thanks Leanne and absolutely crumble cake is a breakfast food :)

        Reply
    2. [email protected] says

      June 10, 2019 at 3:29 pm

      5 stars
      I dub thee Rhubarb Queen! Loving everything about this....especially that crumble! ;)

      Reply
      • Jennifer says

        June 10, 2019 at 7:57 pm

        Thanks Annie :)

        Reply
    3. Milena says

      June 10, 2019 at 11:44 am

      5 stars
      I love this recipe and I can see myself giving it a try with peaches, too. The crumble is so easy to make - love your creativity!

      Reply
      • Jennifer says

        June 10, 2019 at 7:57 pm

        Thanks so much, Milena! It would be great with peaches :)

        Reply
    4. Mary Ann | The Beach House Kitchen says

      June 10, 2019 at 7:39 am

      5 stars
      This is my kinda cake Jennifer! Love that rhubarb and I'd never pass up anything with a crumble topping! Well done my friend!

      Reply
      • Jennifer says

        June 10, 2019 at 11:52 am

        Thanks so much, Mary Ann :)

        Reply
    5. Dawn - Girl Heart Food says

      June 10, 2019 at 7:30 am

      5 stars
      Love the cinnamon crumble! And love the main ingredient - rhubarb! This would be so lovely with a big scoop of vanilla ice cream right about now :)

      Reply
      • Jennifer says

        June 10, 2019 at 11:51 am

        Thanks so much, Dawn and yes, ice cream is always a good idea :)

        Reply
    6. Chris Scheuer says

      June 09, 2019 at 6:31 pm

      5 stars
      This looks spectacular! Such a unique crumble topping, I love it!

      Reply
      • Jennifer says

        June 09, 2019 at 7:13 pm

        Thanks Chris! In all my years of baking, I've never made a crumble that way, but it was delicious and easy and I'm totally going to use that elsewhere :)

        Reply
    7. Tricia | Saving Room for Dessert says

      June 09, 2019 at 1:18 pm

      5 stars
      You know this is my kind of cake! Looks like you are making the best of your garden fresh rhubarb - wish I had some right now so I could make this lovely cake. Love the crumble top too!

      Reply
      • Jennifer says

        June 09, 2019 at 7:14 pm

        Thanks Tricia and yes, lots of rhubarb here. This cake would be great with strawberries, as well (and other Summer fruits).

        Reply

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