There’s something about the first bite of a Strawberry-Rhubarb Crumble Bar that transports me back to sunlit kitchens filled with laughter and warmth. The perfect balance of sweet strawberries and tart rhubarb dances on your palate, while the golden crumble topping offers a satisfying crunch that complements the gooey filling beneath. This delightful dessert is like a comforting embrace, effortlessly evoking nostalgia for shared family dinners or cozy afternoons spent with friends.
What makes these bars even more irresistible is how simple they are to whip up! With just a handful of ingredients and a few easy steps, you can create a dessert that not only looks impressive but also tastes like you’ve spent hours in the kitchen. Whether you’re hosting a gathering or looking to indulge in a sweet treat during your downtime, these Strawberry-Rhubarb Crumble Bars are sure to delight every taste bud. Let’s dive into this delicious recipe that could become the star of your dessert repertoire!

Why are Strawberry Rhubarb Crumble Bars a must-try?
Simple preparation: These bars come together effortlessly, perfect for bakers of all skill levels.
Bursting flavors: The delightful mix of sweet strawberries and tangy rhubarb creates a flavor sensation that’s hard to resist.
Versatile sweetness: Feel free to substitute fruits or adjust the sugar—tailor the taste to your preference!
Crowd pleaser: Ideal for gatherings, these bars never fail to impress both family and friends.
Make ahead: Prep in advance for busy days, and enjoy them warmed with a scoop of ice cream or on their own.
When you’re in need of something sweet, they stand out as an ideal choice! Don’t forget to check out my delicious Lemon Bars Sweet for another delightful treat!
Strawberry Rhubarb Crumble Bars Ingredients
For the Fruit Filling
- Fresh Strawberries – Provides sweetness and flavor; can substitute with additional rhubarb or blueberries if needed.
- Rhubarb Stalks – Adds tartness that balances the sweetness; can replace with tart cherries if rhubarb is unavailable.
- Granulated Sugar – Sweetens the fruit filling; adjust quantity based on personal preference or fruit sweetness.
- Lemon Juice – Balances the sweetness and brightens the flavor; fresh lemon juice is preferred for the best taste.
- Cornstarch – Thickens the fruit filling; can be omitted if thick fruits are used.
For the Crumble Topping
- All-Purpose Flour – Provides structure for the crumble; for gluten-free, an alternative gluten-free baking blend can be used.
- Brown Sugar – Adds richness to the crumble topping; light brown sugar works best for enhanced flavor.
- Rolled Oats – Contributes to the crumble texture, adding chewiness; use certified gluten-free oats if necessary.
- Unsalted Butter – Creates a rich, buttery flavor in the crumble; cold, cubed butter is necessary for proper texture.
- Baking Powder – Acts as a leavening agent for the crumble; ensure it is fresh for optimal rise.
- Salt – Enhances overall flavors; adjust salt level to taste if desired.
These Strawberry Rhubarb Crumble Bars are sure to become a staple in your dessert repertoire, offering a blend of nostalgia and delightful taste with each bite!
How to Make Strawberry Rhubarb Crumble Bars
- Preheat the Oven: Begin by preheating your oven to 350°F (175°C). Grease an 8×8-inch baking dish to prepare for your delicious bars.
- Combine the Fruits: In a mixing bowl, toss together fresh strawberries, rhubarb stalks, granulated sugar, lemon juice, and cornstarch. Mix until the fruit is evenly coated and set aside to let the flavors meld.
- Make the Crumble Topping: In another bowl, whisk together all-purpose flour, rolled oats, brown sugar, baking powder, and salt. Using chilled, cubed unsalted butter, cut it into the mix until you achieve a crumbly texture resembling coarse crumbs.
- Layer in the Dish: Press half of the crumble mixture firmly into the bottom of the greased baking dish. Pour the fruit filling over the crust, spreading it evenly.
- Top and Bake: Sprinkle the remaining crumble mixture over the fruit layer. Bake in the preheated oven for 35-40 minutes, until the top is golden brown and the fruit filling is bubbly.
- Cool and Slice: Allow the bars to cool in the pan before cutting them into squares. This helps them set perfectly!
Optional: Serve warm with a scoop of vanilla ice cream for an extra special treat!
Exact quantities are listed in the recipe card below.

Strawberry Rhubarb Crumble Bars Variations
Feel free to make these delightful bars your own with simple twists and swaps perfect for any palate!
- Mixed Berries: Substitute some strawberries with blueberries or raspberries for a colorful medley bursting with flavor.
- Nutty Crumble: Add chopped almonds or pecans to the crumble mixture for a delightful crunch that complements the soft fruit.
- Gluten-Free Delight: Use a gluten-free baking blend instead of all-purpose flour to make these bars suitable for gluten-sensitive friends.
- Spiced Upgrade: A pinch of cinnamon or nutmeg in the crumble can add a cozy warmth, enhancing the flavors and aromas of your dessert.
- Add Vanilla: Incorporate a splash of vanilla extract into the fruit filling for an extra layer of rich, sweet aroma that enhances the overall taste.
- Tart Twist: Mix in a tablespoon of lemon zest to the fruit filling for a bright, zesty punch that elevates the flavor profile.
- Chili Heat: For a surprising kick, sprinkle a dash of cayenne pepper or your favorite chili powder into the crumble topping—it pairs unexpectedly well with the sweetness!
- Creamy Indulgence: Top your warm bars with a generous scoop of vanilla ice cream or a dollop of whipped cream for a deliciously decadent dessert experience.
What to Serve with Strawberry Rhubarb Crumble Bars?
These delightful bars are a celebration of summer flavors, so let’s create a spread that pairs perfectly with their sweet-tart goodness.
- Vanilla Ice Cream: The creamy texture adds a delightful contrast to the fruity bars, creating a comforting dessert experience. A scoop on top makes every bite heavenly!
- Whipped Cream: Light and airy, a dollop of whipped cream enhances the bars’ flavors without overwhelming them. It brings a soft finish to each delicious mouthful.
- Fresh Mint Leaves: A sprinkle of fresh mint adds a burst of freshness and a pop of color. This herb complements the strawberries and rhubarb beautifully.
- Lemonade: The zingy freshness of lemonade balances the sweetness of the bars, making it a refreshing drink choice during warm afternoons. Its citrusy uplift is especially delightful!
- Herbal Tea: A cup of aromatic herbal tea, such as chamomile or mint, offers a calming contrast to the rich flavors of the crumble bars. It’s an ideal pairing for a cozy afternoon.
- Shortbread Cookies: The buttery crunch of shortbread complements the bars’ texture, adding a delicious and nostalgic touch. Serve alongside for a delightful duo of treats.
- Cheese Platter: Pairing these bars with a selection of cheeses, such as creamy brie or tangy goat cheese, creates a gourmet experience. The cheese’s richness contrasts beautifully with the fruity sweetness.
- Dark Chocolate Squares: A few pieces of dark chocolate on the side provide a decadent finishing touch. The chocolate adds a layer of complexity to each bite of the crumble.
- Sparkling Water with Berries: Serve sparkling water infused with fresh berries for a light, refreshing drink that enhances the fruity profile of the bars. It’s a delightful way to keep things vibrant!
How to Store and Freeze Strawberry Rhubarb Crumble Bars
Room Temperature: Keep the bars in an airtight container at room temperature for up to 2 days to maintain their freshness and flavor.
Fridge: Store in the refrigerator for up to 1 week. This helps keep the Strawberry Rhubarb Crumble Bars cool and extends their shelf life.
Freezer: For longer storage, freeze the bars in an airtight container for up to 3 months. Make sure to wrap them well to prevent freezer burn.
Reheating: When ready to enjoy, reheat in a 350°F oven for 10-15 minutes to bring back the deliciously warm, gooey texture!
Expert Tips for Strawberry Rhubarb Crumble Bars
- Perfect Fruit Mix: Choose ripe strawberries and firm rhubarb for the best combination of flavors. Avoid overly soft fruits to prevent a mushy filling.
- Customize Sweetness: Taste your fruit mixture before baking—adjust sugar based on the natural sweetness of your strawberries and rhubarb, ensuring optimal flavor in your Strawberry Rhubarb Crumble Bars.
- Chill Your Butter: Using cold butter in the crumble mixture is vital for a flaky, crumbly texture. Aim for cubed butter straight from the fridge for the best results.
- Don’t Overmix: When combining your dry ingredients and butter, mix just until crumbly. Overmixing can lead to dense topping rather than a light, crunchy crumble.
- Cooling Time: Allow the bars to cool completely in the pan before slicing. This helps them firm up, making it easier to cut nice, clean squares without the filling spilling out.

Strawberry Rhubarb Crumble Bars Recipe FAQs
What should I look for when selecting strawberries and rhubarb?
Absolutely! Look for fresh strawberries that are bright red and plump, avoiding any with dark spots or signs of mold. For rhubarb, choose firm, crisp stalks that are vibrant in color. Avoid any that have wilted leaves or are overly soft, which may lead to a mushy filling in your Strawberry Rhubarb Crumble Bars.
How should I store leftover Strawberry Rhubarb Crumble Bars?
Great question! Keep the bars in an airtight container at room temperature for up to 2 days. If you want to extend their shelf life, you can refrigerate them for up to a week. Just make sure they’re completely cooled before storing to maintain that delightful texture!
Can I freeze Strawberry Rhubarb Crumble Bars?
Yes, you can! Freeze the bars in an airtight container or tightly wrapped in plastic wrap for up to 3 months. For best results, it’s a good idea to slice them before freezing, making it easy to grab just what you need. When you’re ready to enjoy them, simply reheat in a 350°F oven for 10-15 minutes until warmed through.
What should I do if my crumble topping is too wet or too dry?
If your crumble topping is too wet, it might be because too much butter has been added. Add a little more flour and oats to balance it out. If it’s too dry, try adding a small amount of melted butter to help bind it together. Remember, the crumble should have a coarse texture—not too sticky, but not crumbly to the point of falling apart!
Are these bars suitable for people with gluten allergies?
Very! To make gluten-free Strawberry Rhubarb Crumble Bars, simply substitute all-purpose flour with a gluten-free baking blend. Additionally, make sure to use certified gluten-free oats and ensure your cornstarch is free from cross-contamination. This way, everyone can enjoy the deliciousness without worry!
Can I adjust the sweetness of the fruit filling?
Yes, absolutely! You can taste the strawberry-rhubarb mixture before baking and adjust the sugar according to your personal preference or the sweetness of your fruits. Keep in mind that ripe strawberries may require less sugar than under-ripe ones, so adjust as necessary to achieve that perfect balance in your bars.

Indulgent Strawberry Rhubarb Crumble Bars You'll Love
Equipment
- 8x8-inch baking dish
- Mixing bowls
- Whisk
Ingredients
For the Fruit Filling
- 2 cups fresh strawberries provides sweetness and flavor
- 2 cups rhubarb stalks adds tartness
- 3/4 cup granulated sugar adjust based on personal preference
- 2 tablespoons lemon juice fresh preferred
- 2 tablespoons cornstarch can be omitted if thick fruits are used
For the Crumble Topping
- 1 cup all-purpose flour or gluten-free blend
- 1/2 cup brown sugar light brown sugar works best
- 1/2 cup rolled oats use certified gluten-free oats if necessary
- 1/2 cup unsalted butter cold, cubed
- 1 teaspoon baking powder ensure fresh for optimal rise
- 1/4 teaspoon salt adjust to taste
Instructions
How to Make Strawberry Rhubarb Crumble Bars
- Preheat your oven to 350°F (175°C). Grease an 8x8-inch baking dish.
- In a mixing bowl, toss together fresh strawberries, rhubarb stalks, granulated sugar, lemon juice, and cornstarch. Mix until evenly coated.
- In another bowl, whisk together flour, rolled oats, brown sugar, baking powder, and salt. Cut in the cold butter until the mixture resembles coarse crumbs.
- Press half of the crumble mixture into the bottom of the greased dish. Pour the fruit filling over the crust.
- Sprinkle the remaining crumble mixture over the fruit layer. Bake for 35-40 minutes until golden brown.
- Allow to cool in the pan before cutting into squares.
Notes






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