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Strawberry Rhubarb Bars Recipe

Published: Jan 24, 2026 by Sky · This post may contain affiliate links · Leave a Comment

Jump to Recipe· 3.9 from 20 reviews

If you’re on the hunt for a delightful treat that perfectly balances sweet and tart flavors with a wholesome twist, this Strawberry Rhubarb Bars Recipe is calling your name. Imagine luscious chunks of fresh strawberries mingling with tangy rhubarb, all nestled in a crispy, crumbly oat and almond flour crust that’s tender yet sturdy. These bars are not only scrumptious but also vegan and gluten-free, making them a lovely option for nearly any dietary need. Whether you need a summery snack or a dessert that feels like a warm hug, these bars bring seasonal fruit and comforting textures straight to your kitchen with ease and natural goodness.

The image shows a close-up of a mix of bright red strawberries cut into halves and quarters, along with smaller pieces of greenish-pink rhubarb scattered all over a white marbled surface. A white slotted spoon is placed on the right side of the image, scooping up some of the strawberry and rhubarb pieces. The strawberries have a glossy texture and the rhubarb pieces are smooth with visible color changes from green to pink. The mix is fresh and vibrant, filling the entire frame. photo taken with an iphone --ar 4:5 --v 7

Ingredients You'll Need

The magic behind this Strawberry Rhubarb Bars Recipe lies in its simple, natural ingredients that come together to create something truly special. Each component offers a unique contribution—from the wholesome oats adding chew and crunch, to the coconut oil bringing a silky richness that holds everything together flawlessly.

  • Strawberries (1 cup diced): Ripe and juicy, they provide natural sweetness and vibrant color.
  • Rhubarb (1 cup diced): Adds a tangy contrast that brightens up the flavor profile.
  • Cornstarch (1 teaspoon): Helps thicken the fruit filling so it holds nicely in the bars.
  • Lemon juice (½ teaspoon): Enhances fruit brightness and balances the sweetness.
  • Maple syrup (½ teaspoon): A touch of natural sweetness that complements the fruit.
  • Vanilla (¼ teaspoon): Adds warmth and subtle complexity to the filling.
  • Whole rolled oats (⅔ cup plus more for garnish): Provides hearty texture and a rustic finish.
  • Chopped walnuts (⅔ cup): Introduces a satisfying crunch and nuttiness.
  • Almond flour (½ cup): Keeps the bars gluten-free while offering a delicate crumb.
  • Brown sugar (½ cup): Deep, caramel-like sweetness that enriches the crumble.
  • Ground flaxseed (¼ cup): Adds fiber and a subtle nutty flavor, boosting nutrition.
  • Cinnamon (1 teaspoon): Brings warmth and cozy spice to the crumble.
  • Sea salt (heaping ¼ teaspoon): Balances sweetness and enhances all flavors.
  • Firm coconut oil (2 tablespoons plus more for greasing): Binds the crumble while adding a subtle tropical aroma.
  • Water (1½ tablespoons): Helps bring the crumble ingredients together for perfect texture.

How to Make Strawberry Rhubarb Bars Recipe

Step 1: Prepare Your Baking Setup

Start by preheating your oven to 350°F and lining an 8x8-inch baking pan with parchment paper. Lightly spray the exposed sides with nonstick cooking spray so your bars lift out easily once baked. Proper prep here ensures a flawless finish and no sticking mess.

Step 2: Mix the Fruit Filling

In a medium bowl, toss together your diced strawberries and rhubarb with cornstarch, lemon juice, maple syrup, and vanilla. This combination ensures the fruit softens perfectly in the oven, releasing just enough juices without becoming soupy. The cornstarch keeps everything thick and luscious.

Step 3: Make the Crumble Mixture

Using a food processor, pulse the oats, walnuts, almond flour, brown sugar, flaxseed, cinnamon, and sea salt just until combined. Then add the firm coconut oil and pulse again until the texture is crumbly. Finally, drizzle in the water and pulse a few more times — this gentle moisture helps the crumble hold together without being too dense.

Step 4: Bake the Crust

Press about two-thirds of the crumble mixture firmly into your prepared pan, forming an even base. Bake this crust for 20 to 25 minutes, until golden brown and firm to the touch. Let it cool slightly for about 15 minutes before moving on — this step creates a deliciously sturdy foundation for your fruit filling.

Step 5: Add Filling and Finish Baking

Spread the fresh fruit filling evenly over the cooled crust, then sprinkle the remaining crumble over the top. Garnish with a few whole rolled oats for extra texture and visual appeal. Bake for another 20 minutes, or until the fruit is soft and bubbling and the topping has crisped up lightly. Let the bars cool completely in the pan before slicing so they keep their shape perfectly.

How to Serve Strawberry Rhubarb Bars Recipe

A baking tray lined with white parchment paper holds a crumbly, golden-brown oat mixture clustered mostly in the center with some pieces scattered around. Next to the tray, there is a white bowl filled with a colorful fruit mixture, mainly red strawberries and green pieces, with a spoon inside. Both items rest on a white marbled surface, and a white cloth with black stripes is partially visible to the right. photo taken with an iphone --ar 4:5 --v 7

Garnishes

These bars are charming enough on their own, but a dusting of powdered sugar or a light drizzle of coconut cream can elevate their rustic elegance. Fresh mint leaves add a pop of green and fresh aroma that pairs wonderfully with the tart fruit flavors.

Side Dishes

Serve alongside a scoop of creamy vanilla vegan ice cream or a dollop of coconut yogurt to create a dessert that is both refreshing and indulgent. A chilled cup of herbal tea or a lightly brewed iced green tea also makes a perfect companion to balance the sweet-tart harmony.

Creative Ways to Present

Try arranging these Strawberry Rhubarb Bars Recipe squares in a beautiful wooden serving tray lined with parchment for a casual summer gathering. Alternatively, layer small squares with whipped coconut cream and extra fresh strawberries in pretty glass jars for an impressive parfait-style presentation that’s sure to wow guests.

Make Ahead and Storage

Storing Leftovers

Keep your leftover bars in an airtight container in the refrigerator for up to four days. This preserves the fresh fruit filling without sacrificing the texture of the crumble, making for a delicious grab-and-go snack or dessert later in the week.

Freezing

If you want to stash these bars for longer, wrap individual squares tightly in plastic wrap and place them in a freezer-safe bag. Frozen, they stay fresh for up to three months and thaw quickly at room temperature or in the fridge.

Reheating

Warm your bars gently in the oven at 300°F for 8 to 10 minutes or until heated through if you crave that fresh-from-the-oven comfort. Avoid microwaving as it can make the crumble soggy. This quick reheat brings back that just-baked magic every time.

FAQs

Can I use frozen strawberries and rhubarb for this recipe?

Yes! Frozen fruit works well, but make sure to thaw and drain any excess liquid before mixing with the other ingredients to prevent a soggy crust.

Is this recipe suitable for nut allergies?

The bars use walnuts and almond flour, so they are not nut-free. However, you can experiment with seed flours and pumpkin seeds to create a nut-free version, but the texture will vary.

Can I substitute the coconut oil?

Absolutely. Firm butter or vegan margarine can be used as a substitute for coconut oil, though it may slightly change the flavor and richness.

How ripe should the strawberries be?

Choose strawberries that are ripe but still firm to ensure they hold up during baking and contribute the perfect natural sweetness without becoming mushy.

Can I make the crumble topping ahead of time?

Yes, you can prepare the crumble mixture in advance and store it covered in the fridge for up to two days before assembling and baking the bars.

Final Thoughts

There’s something truly special about a homemade bar that captures the fresh flavors of the season while offering comfort and warmth, and this Strawberry Rhubarb Bars Recipe does exactly that. I encourage you to give it a try and enjoy the beautiful balance of vibrant fruit and hearty crumble in every bite. Whether it becomes your go-to afternoon snack or a star dessert at your next gathering, these bars are sure to bring smiles and happy cravings all around.

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Strawberry Rhubarb Bars Recipe

Strawberry Rhubarb Bars Recipe


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

3.9 from 20 reviews

  • Author: Sky
  • Total Time: 1 hour 15 mins
  • Yield: 16 bars
  • Diet: Gluten Free, Vegan
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Description

These Strawberry Rhubarb Bars are a delightful and healthy summer dessert and snack, featuring a naturally sweet and tangy fruit filling made from fresh strawberries and rhubarb. The bars have a crunchy crumble made with oats, almond flour, walnuts, and coconut oil, making them both gluten-free and vegan. Perfectly balanced with cinnamon and a hint of maple syrup, these bars offer a nutritious treat suitable for various dietary preferences.


Ingredients

Fruit Filling

  • 1 cup diced strawberries
  • 1 cup diced rhubarb
  • 1 teaspoon cornstarch
  • ½ teaspoon lemon juice
  • ½ teaspoon maple syrup
  • ¼ teaspoon vanilla extract

Crumble Crust and Topping

  • ⅔ cup whole rolled oats, plus more for garnish
  • ⅔ cup chopped walnuts
  • ½ cup almond flour
  • ½ cup brown sugar
  • ¼ cup ground flaxseed
  • 1 teaspoon cinnamon
  • heaping ¼ teaspoon sea salt
  • 2 tablespoons firm coconut oil, plus more for greasing
  • 1½ tablespoons water


Instructions

  1. Preheat and Prepare Pan: Preheat your oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper and lightly spray the exposed sides with nonstick cooking spray to prevent sticking.
  2. Make the Fruit Filling: In a medium bowl, combine the diced strawberries, diced rhubarb, cornstarch, lemon juice, maple syrup, and vanilla extract. Mix well to coat the fruit evenly; this mixture will thicken as it bakes, creating a luscious filling.
  3. Prepare the Crumble: Using a food processor, pulse together the rolled oats, chopped walnuts, almond flour, brown sugar, ground flaxseed, cinnamon, and sea salt just until combined. Add the firm coconut oil and pulse again until the mixture starts to come together. Add the water and pulse once more, ensuring the crumble holds together when pressed.
  4. Form and Bake the Crust: Press about two-thirds of the crumble mixture evenly into the bottom of the prepared baking pan to form the crust. Bake for 20 to 25 minutes until the crust is golden brown and firm to the touch. Remove from the oven and allow to cool for 15 minutes.
  5. Add Filling and Topping: Spread the fruit filling evenly over the cooled crust. Sprinkle the remaining crumble mixture over the top and garnish with additional rolled oats for texture and visual appeal.
  6. Final Bake and Cool: Return the pan to the oven and bake for another 20 minutes until the fruit filling is soft and bubbling and the topping is lightly crisp. Remove from the oven and let the bars cool completely before slicing to ensure neat cuts. Store any leftovers covered in the refrigerator.

Notes

  • You can substitute chopped pecans or almonds for walnuts if preferred.
  • Make sure the rhubarb is fresh and not too woody for the best texture and flavor.
  • For a sweeter filling, increase maple syrup slightly but be cautious not to add too much liquid as it affects the crumble texture.
  • Bars can be stored in an airtight container in the refrigerator for up to 5 days.
  • These bars are perfect served chilled or at room temperature.
  • Prep Time: 15 mins
  • Cook Time: 1 hour
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

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Hi, I’m Sky. I truly believe that anyone can cook with confidence and I want Sky’s Recipes to be your go-to guide for meals that never fail.

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