Strawberry Rhubarb Bars

These easy strawberry rhubarb bars are an addictive summer treat! Made with almond flour & walnuts, they have a lightly sweet, nutty flavor.

Strawberry Rhubarb Bars

By popular request: Strawberry Rhubarb Bars! I did a poll on Instagram last week asking which strawberry rhubarb dessert I should make. If you were one of the many that voted for crumble bars – you win!

Well, actually, I win too, because these strawberry rhubarb bars are super yummy. They’re nutty, oat-y, and crisp, with that irresistible sweet/tart strawberry rhubarb flavor. Of course, they’re a delicious dessert, but they’re also pretty healthy, so I wouldn’t blame you for eating one (or more) for breakfast either.

Strawberries and rhubarb

How to Make Strawberry Rhubarb Bars

This strawberry rhubarb bars recipe is super easy because the crust and the crumb topping are one and the same. It’s a gluten-free mix of oats, nuts, brown sugar, flax, and cinnamon. To make it, pulse the ingredients together in a food processor and press 2/3 of the mixture into the pan to form a crust. Save the rest to use as the crumble on top!

Oat and nut crumble in a baking pan Pressing crumble into a baking dish

Once you’ve pressed the crust into the bottom of the pan, pop it in the oven to pre-bake for 20 minutes or so, until it’s nicely golden brown.

Meanwhile, work on the filling. To make it, I mix fresh strawberries and rhubarb with lemon juice, vanilla, and just a touch of maple syrup. I skip any granulated sugar or brown sugar here, and I go light on the maple in order to let the sweetness of the fruit itself shine.

Strawberry rhubarb filling and oat crumble

Once the pre-baked crust has cooled slightly, spoon the fruit filling on top. Scatter on the remaining crumb mixture, and bake!

Find the full recipe at the bottom of this post.

Strawberry rhubarb bars recipe

Strawberry Rhubarb Bars Tips

  • Chop the fruit finely. Our goal is to spread the fruit filling in an even layer across the crust and to get a good mix of strawberries and rhubarb in each bite. To achieve this, finely chopping the fruit is essential. I thinly slice the rhubarb stalks, cut small strawberries into quarters, and chop large ones into eighths.
  • Let the bars cool completely. On the whole, this recipe is easy, but there is one hard part: waiting for the bars to cool! Do not skip this step. The bars must cool to room temperature in order to hold their shape. If you cut them too soon, they will crumble.
  • Refrigerate the leftovers. If you’re not serving all these bars on the same day, store the leftovers for up to 3 days in an airtight container in the fridge. Enjoy!

Strawberry Rhubarb Crumble Bars

More Favorite Dessert Recipes

If you love these strawberry rhubarb bars, try one of these sweet treats next:

4.7 from 25 reviews

Strawberry Rhubarb Bars

Prep time
Cook time
Total time
These strawberry rhubarb bars are an easy, healthy summer treat. Made with oats, almond flour & coconut oil, they're vegan and gluten-free.
Recipe type: Dessert, snack
Cuisine: American
Serves: 16 bars
Fruit filling
  • 1 cup diced strawberries
  • 1 cup diced rhubarb
  • 1 teaspoon cornstarch
  • ½ teaspoon lemon juice
  • ½ teaspoon maple syrup
  • ¼ teaspoon vanilla
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 tablespoon firm coconut oil, more for greasing
  • 1½ tablespoons water
  1. Preheat the oven to 350°F and line an 8x8-inch baking pan with parchment paper. Lightly spray the exposed pan sides with nonstick cooking spray.
  2. Make the fruit filling: In a medium bowl, mix together the strawberries, rhubarb, cornstarch, lemon juice, maple syrup, and vanilla.
  3. Make the crumble: In a food processor, combine the oats, nuts, almond flour, brown sugar, flaxseed, cinnamon, and salt and pulse until just combined. Add the coconut oil and pulse again. Add the water and pulse again. Press ⅔ of the crumble into the baking pan to form a crust. Bake 20 to 25 minutes or until golden brown and firm. Remove from the oven and let cool for 15 minutes.
  4. Spread the fruit filling over the crust, sprinkle with the remaining crumble, and garnish with some rolled oats. Bake for an additional 20 minutes, or until the fruit is soft and the crumble topping is lightly crisp. Let cool completely before slicing. If not serving the same day, store the bars covered in the refrigerator.



Leave a comment:

Your email address will not be published. Required fields are marked *

Rate this recipe (after making it):  

  1. Jamie

    Made these today. They’re ok. Not enough fruit at all, need to double the amount to get the good summer flavor. Mine also didn’t stay together like a “bar”, more like a crumble. I’d use this as a guide but make some tweaks next time.

  2. Jess

    Could I use GF cup for cup instead of the almond flour? Or maybe just sub almond flour for more oats?


    • Phoebe Moore (L&L Recipe Developer)

      Hi Jess, we haven’t tested this, so I can’t guarantee the results, but I think the GF cup for cup would work well as an almond flour sub.

  3. Lainey

    Delicious and not overly sweet, but sadly mine did not hold together as well as yours pictured above.
    I followed the instructions to a T but not sure why they crumbled a bit when sliced. They were left to set both at room temp and in the fridge for several hrs before serving so I’m at a loss for what went wrong.
    I used a glass pyrex 8×8 wondering if I didn’t divide the 2/3- 1/3 enough? I maybe could have cooked it a tad longer to get the top integrated, but was worried to overcook the bottom layer. Do you use a scale to divide the top and bottom? I’m looking at your pic which looks to have slightly less crumble on top than mine.

  4. Lainey

    Just out of the oven and cooling for tonights Book Club.
    Fingers crossed they are a hit.
    I’ll let you know.

  5. Lillian

    I was disappointed in these. I love strawberry rhubarb baked goods but these did not have enough fruit (barely a scraping over the top even though I used a few Tbs of fruit more than the recipe called for) and just didn’t pop with flavor at all. I made them for a group dinner of 11 people, and even though it makes a very small amount, less than half was gone at the end of the night.

  6. Lynne neukom

    Oh my goodness! These bars explode with flavor! They were so easy to prepare, the texture was perfect, and the fruit was just the right blend of sweetness.

  7. Elisa

    Turned out amazing, loved it!! For me, I had to double the crumble recipe

A food blog with fresh, zesty recipes.
Photograph of Jeanine Donofrio and Jack Mathews in their kitchen

Hello, we're Jeanine and Jack.

We love to eat, travel, cook, and eat some more! We create & photograph vegetarian recipes from our home in Chicago, while our shiba pups eat the kale stems that fall on the kitchen floor.