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    Where Is My Spoon > Recipes > Sweets > Cakes

    Rhubarb Crumb Cake

    Published by: Adina July 2, 2021 ยท Last modified: July 5, 2024 Leave a comment
    Jump to Recipe
    pinterest image of a piece of traybake with streusel.

    This soft and comforting rhubarb crumb cake is loaded with tangy rhubarb and crunchy crumbs. The rhubarb cake recipe is super easy to make, ready in about one hour, and perfect for the rhubarb season.

    slice of rhubarb crumble cake close up.

    Rhubarb crumb cake is a delightful dessert that combines the tartness of rhubarb with a sweet and buttery topping. It's a perfect balance of flavors and textures, a simple and delicious cake that everybody enjoys.

    Do you need more rhubarb and crumbs recipes? Check out Rhubarb Apple Crumble, Rhubarb Apple Crisp, or Strawberry and Rhubarb Crumble Tart.

    Jump to recipe
    • Why will you love this recipe?
    • Recipe ingredients
    • How to make a crumb cake with rhubarb?
    • Good to know!
    • Recipe FAQs
    • How to serve?
    • More rhubarb cakes
    • Recipe
    • Rhubarb Crumb Cake

    Why will you love this recipe?

    Are you searching for an easy coffee cake to feed a crowd that's cheap and quick to make? Youโ€™ve found it! This delicious rhubarb crumb cake checks all these boxes:

    • Taste and texture: Amazing! It is sweet and tangy, soft and crunchy, light yet comforting.
    • Cheap: Pick fresh rhubarb in the garden or buy it at the farmers market and mix a few other low-cost ingredients. This is also an excellent recipe for using up an abundance of rhubarb in early summer.
    • Easy: All you have to do is a bit of chopping and a bit of stirring. 
    • Quick: Five minutes chopping the rhubarb, less than five minutes mixing the buttery crumble, and another five minutes stirring the batter. The rest happens in the oven.
      • Altogether, you will only need about one hour to make a delicious rhubarb coffee cake recipe that you can serve with a cup of coffee or tea. 

    Recipe ingredients

    collage of two pictures with ingredients for rhubarb cake batter and crumbs.

    Rhubarb:

    • It's one of my favorite seasonal plants. To learn more about dealing with it in the kitchen, read โ€œWhat to Do with Rhubarb (Cook, Bake, Preserve).โ€
    • You will need about 1.7 lbs/750 g of cleaned stalks cut into ยฝ - 1-inch/ 1.5-2 cm. Discard the leaves; they are poisonous.

    Crumbs:

    • This is my favorite and easiest streusel or crumbles recipe because it uses ingredient amounts that are very easy to remember and scale:
      • 2 parts flour + 1 part granulated sugar + 1 part unsalted butter
      • In this recipe: 300 g flour + 150 g granulated sugar + 150 g unsalted butter
    • Of course, this calculation works best when using a scale to measure the ingredients. But that is what I always recommend anyway: use a digital kitchen scale; it makes a lot of a difference in baking (the Amazon affiliate link opens in a new tab).
    • You will need 2 ยฝ cups all-purpose flour + ยพ cup granulated sugar + โ…” cup unsalted butter when it comes to cups. Less easy to remember and to scale, unfortunately. 
    • Additions: pinch of salt, vanilla extract.

    Batter:

    • Granulated sugar, soft unsalted butter, a pinch of salt, large eggs at room temperature, pure vanilla extract, flour (all-purpose or cake flour), baking powder, and Greek-style yogurt or sour cream (it makes the cake base moist, soft, and comforting).

    How to make a crumb cake with rhubarb?

    collage of two pictures of chopped rhubarb and crumbs in separate bowls.
    • Clean and chop the stalks and set them aside (1).ย 
    • Crumb topping: In a bowl, mix sugar, flour, and a pinch of salt. Cut cold butter into small pieces and add them to the bowl together with a bit of vanilla (2).ย 
    • Work it with the electric mixer (dough attachment) or your hands until you get coarse crumbs (the link opens in a new tab).
    • If working with your hands, ensure they are also cold. Place the topping in the fridge while you make the batter.

    Batter:

    collage of two pictures of stirring cake batter in a bowl.
    • Wet ingredients: Beat soft butter, sugar, and salt in a large bowl until light and fluffy (use the electric mixer fitted with the beaters)(3).
    • Add eggs, one at a time, beating well in between, about 1 minute per egg. Stir in vanilla extract (4). 
    collage of two pictures of cake batter in a bowl and then on a baking sheet.
    • Dry ingredients: Mix flour and baking powder in another bowl. Add the flour mixture and the yogurt to the batter and mix it in shortly on low speed (5). 

    Bake:

    • Spread the cake batter onto a large baking sheet lined with parchment paper (6).
    collage of two pictures of unbaked and then baked rhubarb cake with crumbs.
    • Cover with rhubarb (7) and spread the crumb mixture on top of the cake.
    • Bake for 40-45 minutes until the streusels are golden brown and slightly crunchy (8). 

    Variations:

    • You can swap the rhubarb for pretty much any other fruit or berry. For example, I love making similar streusel-topped cakes with peaches or nectarines, plums, cherries, mixed berries, etc.
    • Or make a strawberry rhubarb crumb cake by replacing half of the rhubarb with sliced strawberries.

    Good to know!

    Best tip: Always use a digital kitchen scale in baking; it guarantees the best results.

    Tips for making the crumbs

    For nicely crispy, larger crumbs, use chilled butter as instructed before.

    Alternatively, you can melt the butter in a small pan and mix it with the flour using a fork. The crumbs will be softer, smaller, and crumblier in this case. 

    Both versions are delicious, but I prefer the cold butter version; I like the texture of the crumbs better. 

    Add some cinnamon/nutmeg/cardamom/allspice to the crumble topping.ย 

    More crumb cakes: German Apple Crumble Cake, Coconut and Cherry Cake, and Cherry Crumb Pie

    Recipe FAQs

    Can I use frozen rhubarb for the cake?

    Yes. Defrost it in the sieve and pat it as dry as possible with kitchen paper before placing it on the batter.ย 

    Make crumb cake ahead and store

    You can make the rhubarb crumble cake one day in advance. Let it cool completely on the tray, and cover it with a kitchen towel once cooled. However, the crumbs will lose some of their crunch after a while. The cake will still be scrumptious, though, but softer.ย 
    Refresh: You can solve that by placing the tray in the preheated oven for another 10 minutes or so. Then, serve it lukewarm or let it cool again and serve.ย 
    Keep leftovers in an airtight container in the fridge; they will last 3-4 days.ย 

    Can you freeze a rhubarb crumb cake?

    Yes, the rhubarb crumb cake freezes very well. First, freeze the cooled pieces on the tray or a large plate. Once solid, transfer them to freezer bags and freeze them for up to 3 months.
    Defrost in the refrigerator or on the counter.ย 
    You can also place the frozen pieces on a baking tray and bake them until heated through and slightly crunchy again, about 10-15 minutes at 180ยฐC/ 350ยฐF, but check.
    These crumb cakes can also be frozen: Can I use frozen rhubarb for the cake? Yes. Defrost it in the sieve and pat it as dry as possible with kitchen paper before placing it on the batter.ย 
    Make crumb cake ahead and store You can make the rhubarb crumble cake one day in advance. Let it cool completely on the tray, and cover it with a kitchen towel once cooled. However, the crumbs will lose some of their crunch after a while. The cake will still be scrumptious, though, but softer.ย 
    Refresh: You can solve that by placing the tray in the preheated oven for another 10 minutes or so. Then, serve it lukewarm or let it cool again and serve.ย 
    Keep leftovers in an airtight container in the fridge; they will last 3-4 days.ย 
    Can you freeze a rhubarb crumb cake? Yes, the rhubarb crumb cake freezes very well. First, freeze the cooled pieces on the tray or a large plate. Once solid, transfer them to freezer bags and freeze them for up to 3 months.
    Defrost in the refrigerator or on the counter.ย 
    You can also place the frozen pieces on a baking tray and bake them until heated through and slightly crunchy again, about 10-15 minutes at 180ยฐC/ 350ยฐF, but check.
    These crumb cakes can also be frozen: German Plum Cake and Red Currant Cake.

    How to serve?

    Cut the rhubarb crumb cake into 12 large pieces or 24 smaller ones and serve it lukewarm or at room temperature. 

    Try the rhubarb crumb cake with a generous scoop of vanilla ice cream when serving it lukewarm.ย A dollop of homemade whipped cream would be perfect when serving it at room temperature.

    sliced rhubarb crumbs cake overhead view.

    More rhubarb cakes

    • three stapled slices of rhubarb and ginger cake on a wire rack.
      Rhubarb and Ginger Cake
    • bundt cake with rhubarb and a few strawberries around it.
      Strawberry Rhubarb Bundt Cake
    • rhubarb and blackberry loaf cake sliced on a vintage platter.
      Rhubarb and Blackberry Loaf Cake
    • piece of rhubarb meringue cake with a fork sticking in it.
      Rhubarb Meringue Cake

    Do you like this recipe?

    Please leave a good rating in the recipe card below. Stay in touch through social media: Pinterest, Facebook, and Instagram. Donโ€™t forget to tag #whereismyspoon when you try a recipe!

    Recipe

    many slices of cake with rhubarb and streusel.

    Rhubarb Crumb Cake

    This soft and comforting rhubarb crumb cake is loaded with tangy rhubarb and crunchy crumbs. The rhubarb cake recipe is super easy to make, ready in about one hour, and perfect for the rhubarb season.
    5 from 3 votes
    Print Pin Share GrowSaved! Rate
    Course: Cakes
    Cuisine: American, German
    Prep Time: 15 minutes minutes
    Cook Time: 45 minutes minutes
    Total Time: 1 hour hour
    Servings: 24
    Calories: 280kcal
    Author: Adina

    Equipment

    • Baking sheet about 30x40 cm/ 12x16 inches
    • Mixer with dough attachments and beaters
    Prevent your screen from going dark

    Ingredients 

    • 750 g rhubarb 1.6 lb, Note 1

    Crumb topping:

    • 300 g all purpose flour 2 ยฝ cups/ 10.5 oz, Note 2
    • 150 g granulated sugar ยพ cup/ 5.5 oz
    • 150 g unsalted butter chilled โ…” cup/ 5.5 oz
    • pinch salt
    • 1 teaspoon vanilla extract

    Batter:

    • 225 g unsalted butter 1 cup/ 2 sticks
    • 225 g granulated sugar 1 cup + 2 tablespoon / 8 oz
    • pinch salt
    • 3 eggs large
    • 1 teaspoon vanilla extract
    • 275 g all-purpose flour 2 ยผ cups/ 9.5 oz
    • 2 teaspoons baking powder
    • 150 g Greek yogurt ยฝ cup + 1 Tbsp/ 5.5 oz, Note 3

    Instructions

    • Preheat the oven to 180ยฐC/ 350ยฐF. Line the baking sheet with parchment paper.
    • Rhubarb: Clean and chop into pieces about 1.5-2 cm/ ยฝ - 1 inch. Set it aside.
      750 g/ 1.6 lb rhubarb

    Crumb topping:

    • Mix flour, sugar, and salt in a bowl. Cut cold butter into small pieces and add them to the bowl. Add vanilla extract. Work with the mixer fitted with the dough attachment or with your cold hands. Place the topping in the fridge while you make the batter (Note 4).
      300 g/ 2 ยฝ cups flour + 150 g/ ยพ cup sugar + pinch of salt + 150 g/ โ…” cup butter + 1 teaspoon vanilla extract

    Cake batter:

    • Wet ingredients: Beat soft butter, sugar, and salt until light and fluffy with the mixer fitted with the beaters. Add the eggs, one at a time, beating well in between, about 1 minute per egg. Stir in vanilla extract.
      225 g/ 1 cup/ 2 sticks butter + 225 g/ 1 cup + 2 tablespoon sugar + pinch of salt + 3 eggs + 1 teaspoon vanilla extract
    • Add dry ingredients: Mix flour and baking powder in another bowl. Add them to the batter together with the yogurt and mix shortly.
      275 g/ 2 ยผ cup all-purpose flour + 2 teaspoon baking powder + 150 g/ ยฝ cup + 1 tablespoon yogurt

    Bake:

    • Spread the batter on the prepared baking sheet. Cover with rhubarb and top with crumbs.
    • Bake for 40-45 minutes until the crumbs are golden brown and slightly crunchy (Note 5).

    Notes

    1. You can substitute rhubarb with pretty much any fruit or berries you like, for example, peaches or nectarines, plums, cherries, apples, currants, mixed berries, and so on.
    2. Always use a digital kitchen scale in baking; it guarantees the best results (the Amazon link opens in a new tab).
    3. Butter: For sandier, crumblier crumbs, melt the butter in a small pot and mix it with the flour, sugar, and salt using a fork.ย 
    4. Substitute yogurt with sour cream.
    5. Reheat: If desired, the cake can be reheated in the oven; the procedure makes it nice and fresh again. Leftovers can be frozen for up to three months.

    Nutrition

    Serving: 1piece | Calories: 280kcal | Carbohydrates: 36g | Protein: 4g | Fat: 14g | Saturated Fat: 8g | Polyunsaturated Fat: 5g | Cholesterol: 57mg | Sodium: 69mg | Fiber: 1g | Sugar: 17g
    Tried this Recipe? Pin it for Later!Mention @adinabeck or tag #WhereIsMySpoon!

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