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    Home » Recipes » Brownies & Bars

    Strawberry Rhubarb Crumble Bars

    Published: May 5, 2020 · Last Modified: Aug 9, 2022 by Emma · 5 Comments · This post may contain affiliate links ·

    Jump to Recipe

    A crumble bar that tastes just like pie. Say what?! Sweet strawberry and rhubarb jammy filling sandwiched between a buttery shortbread base and crumble topping, seriously, they are amazing. Heartwarming and nostalgic, these Small Batch Strawberry Rhubarb Crumble Bars will have you reaching for another.

    Strawberry Rhubarb Crumble Bars

    The sweet flavours of strawberry combined with the tartness of the rhubarb go together like chocolate and hazelnut! Basically, they are two flavours worth pairing together. Trust me! Another small batch recipe aimed to help those in a low number households during this lockdown. It’s the 8th in my Small Batch Series and one of my favourites. Maybe I say that because of my love for rhubarb, or it's just because I love the ease of making them.

    Ingredients for Strawberry Rhubarb Crumble Bars
    Ingredients
    Making Strawberry Rhubarb Crumble Bars
    Mix dry ingredients
    Ingredients for strawberry bars
    Add butter and mix in with fingertips
    Basic ingredients
    Add egg yolk and mix
    Makine crumble with oats
    Mixture should resemble breadcrumbs
    Crumble topping
    Also when pressed together it should form a ball

    For these Strawberry Rhubarb Crumble Bars, you will need:

    For the base:

    • Flour: the base ingredient for the crumble base and topping
    • Golden Sugar: I use golden sugar, but by all means, sub with white sugar or light/dark brown sugar. The darker the sugar you use, the depth of flavour in the topping will deepen.
    • Old Fashioned Oats: provide a beautiful texture, particularly to the topping
    • Baking Powder: to provide some lightness to the base and topping
    • Salt: cuts through the sweetness. I always add salt to my desserts
    • Butter: Helps bind the ingredients together and, once baked, allows the base, in particular, to be flaky and short. The perfect texture.
    • Egg Yolk: The main binding agent adds a slight richness to the crumble topping and base. If doubling the recipe, add a whole beaten egg into your mixture.

    For the Filling:

    • Strawberries and Rhubarb: When baked together, this breakdown and their juices merge to create a sweet, jammy filling.
    • Lemon Juice: this helps cut through the sweetness. If you don't have any, then don’t worry; carry on with the recipe.
    • Sugar: As the filling cooks, the sugar combines with the fruit to help create the sweet sticky filling. Also needed to offset the sour rhubarb.
    • Cornstarch: Helps to thicken the filling. Strawberries contain high water content, and the cornstarch stops them from becoming too watery.
    Crumble Bars being made
    Add ⅔ to base of loaf tin and flatten evenly
    Making Crumble Bars
    Mix together filling ingredients and pour over base
    Crumble bars in the making
    Add remaining crumble and bake

    How do you make these crumble bars?

    I am such a fan of crumble bars as they combine the tastes of a fruit pie in a really easy manner of making. With no need for pie pastry that requires refrigeration and waiting times. This beautiful crumble bar can be made in only 15 minutes. Quick and easy! We looooove quick and easy desserts around here.

    Step 1 Make the crumble base and topping.

    Talking of easy - these two separate components are made in one go!

    Add your dry ingredients, flour, sugar, oats, baking powder and salt into a medium bowl and mix. Add the cubed butter, and with your fingertips, rub the butter into the flour until it resembles breadcrumbs. Add the yolk and mix until combined.

    Step 2: Make the filling.

    Add all the filling ingredients, strawberries, rhubarb, lemon juice, sugar and cornstarch, into a medium bowl and stir to combine.

    Step 3: Assemble

    Add ⅔ of the crumble filling to a prepared loaf pan. Use your fingertips to press the mixture flat into the pan. This is your base. Then add all the filling onto the base and spread out evenly. Lastly, sprinkle the remaining crumble onto the filling, allowing some of the filling to still show. Then bake for 45 minutes!

    strawberry crumble bars.

    Top Tips to make these Strawberry Rhubarb Crumble Bars

    1. When lining the loaf pan with baking paper. Ensure that the paper hangs over the sides of the pan. Once the bar is cooked and then cooled, having the paper overhang will help you pull the pars out.
    2. Make sure your butter is cold. Just like pastry, if you use warm butter, when baked, you’ll end up with a greasy base. The cold butter allows for a perfectly flaky crust.
    3. Cut the rhubarb into ¼ inch slices to ensure it cooks in the allotted time.
    4. Ensure that you use the freshest strawberries for maximum flavour impact. If your strawbs aren’t at their freshest, then add two tablespoons of strawberry jam/preserve into the fruit filling. This help intensifies the strawberry taste.
    5. Lots of fruit is good! When you pour the filling on top of the base, it will look like a lot. But trust me, go with it. As the fruit cooks, it will reduce and intensify into jammy goodness!
    6. Let the bars cool before slicing if you want beautiful clean slices. But if you aren’t fussed about this, tuck right in with a dollop of ice cream (recommended serving suggestion!)
    crumble bars on serving board.

    If you like more bar and slices recipes, then make sure to check out the following recipes:

    • Chocolate Raspberry Crumble Bars
    • Chocolate Hazelnut Granola Bars
    • Browned Butter White Chocolate Blondies
    strawberry crumble bars on serving board, sliced.
    Print Recipe Pin Recipe
    5 from 2 votes

    Strawberry Rhubarb Crumble Bars, Small Batch

    Easy to make Strawberry Rhubarb Crumble Bars combine the tastes of pie filling with easy to make crumble base and topping. A simple yet super tasty crumble bar that will undoubtedly be a crowd-pleaser.
    THIS SMALL BATCH RECIPE CAN BE DOUBLED IN ORDER TO MAKE A STANDARD SERVING OF 10-12
    Prep Time15 mins
    Cook Time40 mins
    Total Time55 mins
    Category: Bars
    Cuisine: British/Americain
    Servings: 6 slices
    Calories: 381kcal
    Author: Emma Duckworth

    Equipment

    • Mixing bowl 2L
    • 2 lb loaf pan 23 x 14cm (9 x 5.5-inch)

    Ingredients

    Metric - US Customary

    Crumble base and topping

    • 190 g plain flour (all-purpose)
    • 65 g granulated sugar
    • 40 g old fashioned rolled oats
    • ½ teaspoon baking powder
    • ¼ teaspoon fine salt
    • 115 g unsalted butter, cold and chopped
    • 1 egg yolk

    Strawberry rhubarb filling

    • 160 g strawberries, hulled and chopped
    • 150 g rhubarb, diced 1cm (½ inch) thick
    • 1 tablespoon lemon juice
    • 50 g granulated sugar
    • 1 tablespoon cornflour (cornstarch)

    Instructions

    • Preheat the oven to 180°C(350°F). Grease and prepare a 2lb loaf pan 23 x 14cm(9x5.5inch) with parchment paper allowing the paper to hang over the sides.
    • Add the flour, sugar, oats, baking powder and salt into a medium mixing bowl and stir to combine. Add the butter and using your fingertips rub the butter into the flour until it resembles dried bread crumbs. Add the yolk and mix it in with your fingertips. You should be able to squeeze the mixture together and it forms into a light ball.
    • Pour ⅔ of the crumble mixture into the loaf pan, spread it out into an even layer and press down with your fingertips until it forms a flat base.
    • In a separate bowl, add the strawberries, rhubarb, lemon juice, sugar and cornflour and stir to combine. Pour the fruit filling on top of the crumble base in the loaf pan and spread out evenly.
    • Now layer the remaining crumble over the top of the fruit, allowing some of the fruit to show through. Bake in the oven for 40-45 minutes until golden brown on top.
    • Remove from the oven and allow to cool in the loaf tin. Once cooled, lift the crumble bar out of the pan using the overhanging sides of the baking paper and slice. (If you prefer handheld bars, then refrigerate the bars for 1-2 hours until set before slicing)

    All recipes are developed and tested in Metric grams. I strongly recommend that you bake using digital scales for a more accurate result. I have provided a conversion to US customary in the recipe but please note that I haven’t tested using this method.

    Notes

    This recipe can be doubled in size to create a standard portion size. Use one whole egg, beaten if doubling ingredients. Then construct in a 9x9 brownie pan and bake for 45mins.
    Use fresh strawberries: Ensure your strawberries are at their freshest to ensure a sweet and juicy filling. If you think they aren’t quite ripe, then add 1-2 tablespoon of strawberry jam into the filling mixture and mix it in before pouring it onto the crumble base. This will help intensify the jam flavour.
    Substituting rhubarb: If rhubarb isn’t available, then, by all means, substitute with more strawberries, raspberries or blackberries.
    To store: Store these in an airtight container at room temperature for 2-3 days or in the fridge for 3-4 days. They can be frozen for up to one month. Defrost by placing in the fridge or at room temperature to defrost completely.

    Nutrition

    Calories: 381kcal | Carbohydrates: 53g | Protein: 5g | Fat: 17g | Saturated Fat: 10g | Trans Fat: 1g | Cholesterol: 74mg | Sodium: 140mg | Potassium: 182mg | Fiber: 3g | Sugar: 21g | Vitamin A: 551IU | Vitamin C: 19mg | Calcium: 63mg | Iron: 2mg
    Have you tried this recipe yet?Mention @emmaduckworthbakes or tag #emmaduckworthbakes! I’d love to see what you are getting up to in the kitchen!
     Strawberry Rhubarb Crumble Bars Pinterest Graphic

    More Homemade Brownies & Bars

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    • Easy Lotus Biscoff and White Chocolate Blondies
    • Decadent Small Batch Brownies filled with Caramel Sauce
    • Chocolate Raspberry Oatmeal Bars

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      Recipe Rating




    1. Kysinynia

      May 11, 2020 at 12:12 am

      5 stars
      Tried this recipe out last night and absolutely ADORED it! Wanted to make something quick and easy and it was just perfect.

      Added a second egg yolk to get that perfect consistency (maybe because I used white sugar instead of golden or brown) and the results were simply 👩🏽‍🍳💋 So tasty.

      Reply
      • Emma

        May 14, 2020 at 10:46 am

        That’s brilliant- so happy that you liked this recipe- an you are right...it IS quick and easy, that’s why we love it so much at home. Great thinking regarding the extra egg yolk to bind it. Brown sugar has a higher moisture content then granulated white sugar and this added moisture, helps to bind. The white of the original egg or an extra yolk as you did will do the trick if you find the crumble base not coming together.
        Thanks so much for your comment,

        Emma

        Reply

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