Introduction to Easy Rhubarb and Custard Crumble Bars
When it comes to delightful desserts, few treats can match the comfort of homemade crumble bars. If you're looking to elevate your baking game with flavors that sing of spring, these easy rhubarb and custard crumble bars are a must-try. The combination of tart rhubarb and creamy custard, topped with a sweet and crunchy crumble, creates an irresistible balance that satisfies both your sweet tooth and your craving for something cozy.
Why You Should Try Homemade Crumble Bars
Making your own crumble bars is not just about deliciousness; it’s about the joy of baking! Here are a few reasons why you should roll up your sleeves:
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Fresh Ingredients: You know exactly what goes into your dessert. Using fresh rhubarb, vanilla custard, and high-quality butter elevates the flavor.
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Customizable: Feel free to tweak the recipe! Want to add a sprinkle of nuts or swap in different fruits? The possibilities are endless.
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Perfect for Any Occasion: Whether it's a casual get-together or a weeknight treat, these bars are versatile enough to suit any event.
Baking these easy rhubarb and custard crumble bars is a delightful way to create memorable moments, whether you're sharing them with friends or savoring them solo with a cozy cup of tea. Interested in more baking tips? Check out BBC Good Food for additional inspiration!

Ingredients for Easy Rhubarb and Custard Crumble Bars
Creating a delectable batch of easy rhubarb and custard crumble bars starts with gathering the right ingredients. Here’s a quick breakdown to make your shopping a breeze!
Base and Crumble Ingredients
For the foundation of our delicious bars, you will need:
- 9.5 oz butter (Kerrygold unsalted is my favorite for rich flavor)
- 10.5 oz flour (King Arthur all-purpose flour works wonders)
- 2 oz brown sugar (adds depth and moisture)
- 3 oz sugar (for sweetness)
- 1 teaspoon cardamom (for a warm spice touch)
- 2 oz oats (adds a lovely texture)
- 1 egg yolk (for binding everything together)
Filling and Topping Ingredients
Now, let’s talk about that irresistible filling and topping:
- 1 lb rhubarb (fresh or frozen, cut into 1-inch pieces)
- 1 tablespoon cornflour (to help thicken the filling)
- 1.5 oz sugar (to balance the tanginess of rhubarb)
- 0.25 teaspoon ground cinnamon (for an aromatic hint)
- 10 fl oz vanilla custard (I recommend Ambrosia ready-to-serve custard)
- 1 oz almonds (either flaked or slivered to add a delightful crunch)
Make sure to stock up on these ingredients—your taste buds will thank you! Check resources like BBC Good Food for tips on choosing fresh rhubarb and custards.
Step-by-step Preparation for Easy Rhubarb and Custard Crumble Bars
Creating delicious easy rhubarb and custard crumble bars can be a rewarding experience, whether you’re a seasoned baker or a fun home chef trying something new. Follow these straightforward steps to whip up a batch that will surely impress friends and family alike.
Preparing the crumble base
First things first, let’s get that crumble base going! In a large mixing bowl, combine 9.5 oz of softened unsalted butter, 10.5 oz of all-purpose flour, 2 oz of brown sugar, and a teaspoon of cardamom. Use your fingers or a pastry cutter to mix until the texture resembles coarse breadcrumbs. It’s a tactile step, so enjoy it! Once combined, separate about 7 oz of this mixture, adding in 2 oz of oats for later. To the remaining crumble, incorporate an egg yolk—this will help to bind it—and mix until a shaggy dough forms. This process might remind you of playing in the sand, and it's perfectly fine if it’s not uniform.
Baking the base layer
Preheat your oven to 180°C (160°C fan). While it warms up, line a 9x13 inch baking dish with parchment paper. Press the dough from the previous step evenly into the bottom. For an added pro tip, prick it all over with a fork; this helps the base bake evenly and prevents it from puffing too much. Bake for about 15 minutes until it’s lightly golden and set. Your kitchen will start to smell amazing!
Making the rhubarb filling
While the base bakes, it's the perfect time to prepare your rhubarb filling. Combine 1 lb of cut rhubarb (into 1-inch pieces), 1 tablespoon of cornflour, and 1.5 oz of sugar in a bowl. Gently toss to coat the rhubarb with the mixture. The cornflour is crucial here—it absorbs excess moisture during baking, ensuring that your bars don’t turn soggy. Set this aside, and take a moment to admire your vibrant ingredients!
Assembling the bars
Once the base layer is out of the oven, pour 10 fl oz of ready-to-serve vanilla custard evenly over the warm shortbread. It’s okay if you feel tempted to lick the spoon—just remember, you’re creating something delightful! Next, add your prepared rhubarb mixture on top, ensuring it’s evenly spread out. Now, crumble that oat mixture you set aside over the top, creating a lovely layer of texture. This assembly sets the stage for your easy rhubarb and custard crumble bars to shine.
Final baking and topping
Put your assembled masterpiece back into the oven for about 40 minutes. You want the rhubarb to become tender and the top to achieve a lovely golden color. About 10 minutes before baking is done, sprinkle 1 oz of flaked or slivered almonds over the top. This adds a delightful crunch and makes it aesthetically pleasing. Finally, allow your bars to cool in the tin for at least 20 minutes—this helps set everything nicely, so they don't crumble when cut.
By following these steps, you’ll create a batch of easy rhubarb and custard crumble bars that’s both tasty and visually appealing. Don't forget to share your baking triumphs! If you're looking for additional inspiration, check out BBC Good Food or King Arthur Baking for tips on baking perfection.

Variations on Easy Rhubarb and Custard Crumble Bars
Substitute fruits for a different flavor
Want to switch things up from the classic easy rhubarb and custard crumble bars? Try substituting the rhubarb with other fruits! Fresh strawberries, tart cherries, or even diced apples can create delicious variations. You can also mix fruits like berries for a colorful, sweet-tart filling. Just remember to adjust the sugar based on the sweetness of your chosen fruit.
Add spices or nuts to customize
To personalize your crumble bars, think about adding spices or nuts! A pinch of nutmeg or ginger can add a warm kick, while flaked almonds or chopped pecans provide delightful crunch. Experimenting with flavors can transform your easy rhubarb and custard crumble bars into a unique dessert that reflects your taste. Happy baking!
Cooking Tips and Notes for Easy Rhubarb and Custard Crumble Bars
Importance of Using Chilled Butter
Using chilled butter in your easy rhubarb and custard crumble bars is crucial for achieving that delightful crumble texture. Cold butter helps maintain a light and flaky consistency in the dough. When mixed, it creates small pockets of air that expand during baking, leading to a tender base that perfectly contrasts with the tartness of the rhubarb.
How to Prevent Sogginess
No one wants a soggy crumble bar! To prevent this, toss your rhubarb with cornflour and sugar before adding it to the custard. This simple step absorbs excess moisture released during baking, keeping your bars deliciously firm. Additionally, avoid overloading the filling, as too much liquid can also compromise the structure.
For more tips on baking techniques, check out King Arthur Baking.

Serving Suggestions for Easy Rhubarb and Custard Crumble Bars
Best ways to serve with custard or cream
Enjoy your easy rhubarb and custard crumble bars warm, topped with a generous drizzle of creamy custard or a scoop of whipped cream. The contrast of warm bars with a cool topping elevates the dessert experience. For a twist, consider a dollop of clotted cream or even a splash of double cream to add richness. If you want to impress, serve them with homemade vanilla custard—easy to prepare and always a crowd-pleaser.
Perfect pairings for a cozy gathering
These bars shine at gatherings! Pair them with hot beverages like chamomile tea or a rich cappuccino for a relaxing afternoon. You can also serve them alongside fresh fruit such as strawberries or raspberries for a refreshing touch. If you're looking for a heartier option, accompany your dessert with a light cheese platter featuring a mild cheese like brie or gouda—perfect for balancing the tartness of rhubarb. Check out BBC Good Food for more serving ideas!
Time Breakdown for Easy Rhubarb and Custard Crumble Bars
Preparation Time
Getting your Easy Rhubarb and Custard Crumble Bars started takes about 25 minutes. This includes chopping the rhubarb and mixing your ingredients to create that irresistible crumble base. It's a perfect time to put on some music and enjoy the process!
Baking Time
Once everything is assembled, you'll need to bake these delicious bars for 55 minutes. This step ensures that the rhubarb is tender and the topping achieves a lovely golden brown color. Make sure to keep an eye on your oven during the final few minutes!
Total Time
All in all, you’re looking at a total time of 1 hour and 20 minutes from start to finish. In just over an hour, you’ll have a delightful batch of crumble bars ready to impress your friends and family. Perfect for a weekend treat or a cozy evening dessert!
If you're interested in perfecting your baking skills, check out BBC Good Food for amazing baking tips. Happy baking!
Nutritional Facts for Easy Rhubarb and Custard Crumble Bars
Calories and Serving Size
Each of these easy rhubarb and custard crumble bars contains approximately 350 calories, making them a delightful treat. The recipe yields 12 bars, so you can easily share or save some for later!
Key Nutritional Highlights
These bars bring together the unique tartness of rhubarb and the creamy richness of custard, resulting in a dessert that's not just tasty but also provides some nutritional benefits:
- Dietary Fiber: The oats and rhubarb add a good source of fiber, aiding digestion.
- Vitamins and Minerals: Rhubarb is rich in vitamin K and C, bolstering your daily nutrient intake.
- Healthy Fats: The butter adds essential fatty acids, contributing to a balanced diet in moderation.
When enjoyed as an occasional treat within a well-rounded diet, these bars can be a delicious way to indulge while still being mindful of nutrition. For more information on the nutritional benefits of oats and rhubarb, check out Healthline and NutritionData.
FAQs about Easy Rhubarb and Custard Crumble Bars
Can I make these bars ahead of time?
Absolutely! You can prep the easy rhubarb and custard crumble bars a day in advance. After baking, let them cool completely, then store them covered in the refrigerator. They taste just as delightful the next day, making them perfect for gatherings or a sweet treat after a busy day.
How do I store leftover crumble bars?
To keep your leftover bars fresh, store them in an airtight container at room temperature for up to 3 days. If you want to extend their shelf life, you can refrigerate them for up to a week. For even longer storage, consider freezing them. Just wrap them tightly in plastic wrap and then foil, and they’ll last for about three months.
What can I substitute for rhubarb?
If rhubarb isn’t your thing, don’t worry! You can substitute it with tart fruits like sour cherries, cranberries, or even apples mixed with a touch of lemon juice for that tangy punch. This way, you can enjoy your crumble bars, no matter what fruit you have on hand!
For more information on fruit substitutes, check out this helpful guide on substituting in baking.
Conclusion on Easy Rhubarb and Custard Crumble Bars
In conclusion, these easy rhubarb and custard crumble bars are a delightful blend of tart and sweet, offering a comforting dessert that's perfect for any occasion. Whether served warm or cold, they are sure to impress family and friends. Give this recipe a try and savor the moment!

Easy Rhubarb and Custard Crumble Bars
Equipment
- 9x13-inch baking dish
Ingredients
Base and Crumble
- 9.5 oz butter unsalted, preferably Kerrygold
- 10.5 oz flour preferably King Arthur all-purpose
- 2 oz brown sugar
- 3 oz sugar
- 1 teaspoon cardamom
- 2 oz oats
- 1 large egg yolk
Filling and Topping
- 1 lb rhubarb cut into 1-inch pieces
- 1 tablespoon cornflour
- 1.5 oz sugar
- 0.25 teaspoon ground cinnamon
- 10 fl oz vanilla custard preferably Ambrosia ready-to-serve
- 1 oz almonds flaked or slivered
Instructions
Preparation
- Mix the butter, flour, brown sugar, and cardamom until it resembles coarse breadcrumbs. Divide in half, setting 200g aside. Mix the rest with oats for topping. Add egg yolk to the remaining crumble to form a shaggy dough.
- Preheat the oven to 180°C (160°C fan). Line a 9x13 inch baking dish with parchment paper. Press the dough into the tin and prick with a fork. Bake for 15 minutes until golden.
- Prepare rhubarb filling by combining rhubarb pieces with cornflour and sugar in a bowl. Toss to coat evenly and set aside.
- Spread custard over the warm shortbread, then add rhubarb mixture. Top with oat mixture and bake for 40 minutes until rhubarb is tender and top is golden.
- Sprinkle flaked almonds on top and bake for an additional 10 minutes. Let cool in the tin for at least 20 minutes before cutting.



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