Rhubarb Strawberry Crumble Squares

Spring is in the air, and that means rhubarb season is here! These Rhubarb Strawberry Crumble Squares are a delightful combination of tart rhubarb, sweet strawberries, and warm spices, all baked into a buttery, crumbly base. The top layer has a lightly crisp texture that perfectly complements the soft, jammy fruit filling. Each bite is an explosion of nostalgia, bringing back memories of grandma’s kitchen and homemade desserts cooling on the windowsill. These squares are perfect for brunch, an afternoon tea treat, or a simple dessert after dinner. The natural tang of rhubarb pairs beautifully with the sweetness of ripe strawberries, while cinnamon, nutmeg, and ginger add a cozy depth of flavor. Whether you serve them with a scoop of vanilla ice cream or enjoy them on their own, these bars are sure to become a favorite in your home!

Full recipe:

Ingredients:

Base:

• 3 cups all-purpose flour

• ¼ teaspoon salt

• 1 cup brown sugar

• 1 teaspoon baking powder

• ½ cup unsalted butter, softened

• 2 large eggs

Filling:

• 3 ½ cups fresh rhubarb, chopped into ½-inch pieces

• 1 cup strawberries, hulled and sliced

Topping:

• 2 large eggs, whisked

• 1 cup granulated sugar

• ¼ cup unsalted butter, melted

• ½ cup all-purpose flour

• ¼ teaspoon ground ginger

• ½ teaspoon ground cinnamon

• ¼ teaspoon ground nutmeg

Directions:

1. Preheat your oven to 350°F (175°C).

2. Prepare the base: In a mixing bowl, combine flour, salt, brown sugar, baking powder, softened butter, and eggs. Mix until well combined, then press the mixture evenly into a greased 9×13-inch baking dish.

3. Add the filling: Evenly spread the chopped rhubarb and sliced strawberries over the base.

4. Make the topping: In a separate bowl, whisk together eggs, sugar, melted butter, flour, ginger, cinnamon, and nutmeg until smooth. Pour this mixture over the fruit, ensuring even coverage.

5. Bake for 1 hour, or until the topping is golden brown and set.

6. Allow to cool completely before cutting into squares. Store in an airtight container.

Prep Time: 15 minutes | Cooking Time: 60 minutes | Total Time: 1 hour 15 minutes
Kcal: 275 kcal per serving | Servings: 12 squares

A Classic Dessert with a Sweet-Tart Twist

Rhubarb Strawberry Crumble Squares are a match made in dessert heaven. The combination of tangy rhubarb and sweet strawberries creates a flavor balance that is both refreshing and indulgent. When baked into crumble squares, this duo transforms into a buttery, crumbly, and fruit-filled treat that’s perfect for spring and summer.

This recipe brings together three layers of deliciousness:

• A buttery shortbread crust that serves as a sturdy base.
• A jammy rhubarb-strawberry filling that bursts with fruity flavor.
• A crispy, golden oat crumble topping that adds the perfect crunch.

These squares are easy to make, portable, and incredibly versatile, making them ideal for picnics, potlucks, and tea-time treats.

Why This Recipe is the Best?

• Perfect Sweet-Tart Balance: The natural tartness of rhubarb is beautifully complemented by the sweetness of strawberries and a touch of sugar. This combination keeps the dessert from being overly sweet while enhancing the fruit’s fresh flavors.
• Irresistible Texture: The crispy crumble topping, the soft, jam-like fruit filling, and the buttery shortbread crust make every bite a delightful experience.
• Easy to Make: Unlike a traditional pie, these squares don’t require rolling out dough. The crust and crumble topping come together quickly, making this an effortless dessert even for beginners.
• Uses Seasonal Ingredients: Spring and early summer are the best times for fresh rhubarb and strawberries, making this a great way to enjoy seasonal produce.
• Freezer-Friendly: These crumble squares can be made ahead of time and frozen, so you always have a delicious treat on hand.
• Crowd-Pleasing and Portable: They are easy to cut, serve, and transport, making them perfect for parties, bake sales, and picnics.
• Customizable: You can swap out strawberries for raspberries, blueberries, or even apples to create different flavor variations.

The History Behind Rhubarb & Strawberry Desserts

Rhubarb has been used in desserts for centuries, dating back to medieval Europe and early American kitchens. Originally cultivated for medicinal purposes in China, rhubarb eventually became a popular baking ingredient, especially in pies, crumbles, and tarts. Since rhubarb has a naturally tart and tangy flavor, it pairs well with sweet fruits like strawberries, creating the iconic rhubarb-strawberry duo we love today. During the Great Depression, rhubarb was often referred to as the “pie plant” because it was a cheap, easy-to-grow ingredient. People combined it with sugar and fruits like strawberries to create delicious and affordable baked goods. Over time, this combination became a staple in classic American and British baking traditions.

Health Benefits of Rhubarb Strawberry Crumble Squares

While this dessert is definitely a treat, it also offers some nutritional benefits:

• Rich in Antioxidants – Both rhubarb and strawberries are loaded with vitamin C and powerful antioxidants that help boost immunity and fight inflammation.
• High in Fiber – The oats in the crumble topping and the natural fiber from the fruit support healthy digestion.
• Heart-Healthy – Strawberries contain polyphenols, which may help lower blood pressure and reduce the risk of heart disease.
• Lower in Sugar than Other Desserts – Since rhubarb is naturally tart, this recipe requires less added sugar compared to many other fruit desserts.
• Easily Made Vegan or Gluten-Free – By swapping butter for coconut oil and using gluten-free flour and oats, this recipe can be adapted for different dietary needs.

Tips for Making the Best Rhubarb Strawberry Crumble Squares

• Use Fresh, Seasonal Ingredients – Fresh rhubarb and strawberries give the best flavor, but frozen can be used in a pinch (just make sure to thaw and drain excess liquid).
• Don’t Overmix the Dough – When making the crust and crumble topping, mix just until combined. Overworking the dough can make the base too dense.
• Bake Until Golden Brown – The crumble topping should be golden and crisp to get that perfect crunch.
• Let It Cool Before Cutting – For clean slices, let the squares cool completely before cutting. Warm squares will be too soft and may fall apart.
• Pair It With Something Creamy – Serve with whipped cream, vanilla ice cream, or Greek yogurt for an extra delicious experience.

Variations to Try

Want to mix things up? Try these delicious twists:

Maple Pecan Rhubarb Crumble Squares

• Swap out regular sugar for pure maple syrup, and add chopped toasted pecans for extra crunch.

Almond Streusel Rhubarb Squares

• Add almond extract to the filling and sprinkle sliced almonds on top for a nutty flavor.

Raspberry Rhubarb Crumble Squares

• Replace strawberries with raspberries for an extra tart and tangy variation.

Spiced Rhubarb Oat Crumble Squares

• Add a pinch of cinnamon, nutmeg, and ginger for a warm, spiced flavor.

Chocolate-Dipped Rhubarb Squares

• Once cooled, dip half of each square in melted dark chocolate for an indulgent twist.

When to Serve Rhubarb Strawberry Crumble Squares?

These fruity, crumbly squares are perfect for any occasion:

• Spring and Summer Gatherings – A great way to showcase seasonal produce.
• Tea Parties and Brunches – Pairs beautifully with coffee, tea, or mimosas.
• Casual Desserts for Family Dinners – A lighter alternative to heavy cakes.
• Picnics and Outdoor BBQs – Easy to pack and serve on-the-go.
• Homemade Gifts – Wrap them in parchment paper and gift them to friends or neighbors.

What to Serve with Rhubarb Strawberry Crumble Squares?

To take these squares to the next level, try serving them with:

• Vanilla Ice Cream – The creamy sweetness balances the tart fruit.
• Greek Yogurt – A healthier alternative that adds tang and protein.
• Fresh Berries – Enhance the fruit flavors by serving with extra strawberries.
• Drizzle of Honey or Caramel Sauce – For extra indulgence.

Conclusion

Rhubarb Strawberry Crumble Squares are the ultimate spring and summer dessert, bringing together sweet, tart, buttery, and crispy elements in one irresistible bite. Whether you’re making them for a family gathering, an afternoon tea, or just to enjoy at home, they are guaranteed to be a hit. So grab some fresh rhubarb and strawberries, and treat yourself to a batch of these delicious crumble squares today!