Let’s talk about something that’ll make your taste buds dance – Strawberry Rhubarb Bars. These delightful treats blend the sweetness of ripe strawberries with the tangy kick of rhubarb, all nestled on a buttery crust that practically melts in your mouth. They’re the perfect balance between a cookie and a pie, giving you the best of both worlds in one portable, shareable dessert.
If you’ve never tried the strawberry-rhubarb combo before, you’re in for a revelation. This classic pairing creates a flavor that’s somehow nostalgic, even if you’ve never had it before – like a taste of summer childhood memories you didn’t know you were missing.
Why This Recipe is Awesome

Strawberry Rhubarb Bars stand out for so many reasons. First, they’re incredibly versatile – perfect for potlucks, picnics, afternoon tea, or just because it’s Tuesday and you deserve a treat.
Unlike pies, these bars don’t require special slicing skills or serving utensils – they’re grab-and-go perfection. The contrasting textures are what make these bars extraordinary. The crumbly, buttery base provides the perfect foundation for the jammy, bright filling that strikes the ideal balance between sweet and tart.
Plus, the crumb topping adds a delightful texture that completes each bite with a satisfying crunch. What I love most about this recipe is how it transforms rhubarb – often an intimidating ingredient – into something approachable and irresistible. Even rhubarb skeptics find themselves reaching for seconds!
Equipment needed: 9×9-inch baking pan, parchment paper, mixing bowls, pastry cutter or fork, measuring cups, measuring spoons

Strawberry Rhubarb Bars
Ingredients
- For the Crust:
- 1 cup all-purpose flour
- 1/4 cup granulated sugar
- 1/4 teaspoon salt
- 1/2 cup cold unsalted butter cubed
- For the Filling:
- 2 cups fresh rhubarb chopped into 1/2-inch pieces
- 2 cups fresh strawberries hulled and quartered
- 2/3 cup granulated sugar
- 2 tablespoons cornstarch
- 1 tablespoon lemon juice
- 1 teaspoon vanilla extract
- 1/4 teaspoon ground cinnamon optional but recommended for depth
- For the Crumb Topping:
- 1/2 cup all-purpose flour
- 1/2 cup old-fashioned rolled oats
- 1/3 cup brown sugar packed
- 1/4 teaspoon salt
- 1/4 cup cold unsalted butter cubed
Instructions
- Prepare your baking pan by lining a 9×9 inch baking dish with parchment paper, leaving some overhang on the sides for easy removal later. Preheat your oven to 350°F (175°C).
- Make the crust by combining flour, sugar, and salt in a medium bowl. Cut in the cold butter using a pastry cutter or fork until the mixture resembles coarse crumbs. Press firmly and evenly into the bottom of your prepared pan.
- Bake the crust for 15 minutes until it’s just beginning to turn golden around the edges. Remove from oven but keep the oven on.
- Prepare the filling while the crust bakes by combining the rhubarb, strawberries, sugar, cornstarch, lemon juice, vanilla, and cinnamon in a large bowl. Stir gently but thoroughly to ensure all pieces are coated.
- Make the crumb topping by mixing flour, oats, brown sugar, and salt in a bowl. Cut in the cold butter until the mixture forms small clumps that hold together when pressed.
- Assemble the bars by pouring the fruit mixture over the partially baked crust, spreading it evenly. Sprinkle the crumb topping over the fruit layer, covering it completely.
- Bake for 35-40 minutes until the filling is bubbling around the edges and the topping is golden brown. If the topping browns too quickly, tent loosely with foil.
- Cool completely in the pan on a wire rack for at least 2 hours before lifting out using the parchment paper overhang and cutting into squares.
Notes
- For the best texture, make sure your butter is cold for both the crust and topping – this creates those perfect crumbles.
- If using frozen rhubarb or strawberries, thaw completely and drain excess liquid before using.
- These bars can be made a day ahead – the flavors actually improve as they sit overnight.
- For cleaner cuts, refrigerate the cooled bars for an hour before slicing with a sharp knife.
- Store leftovers in an airtight container in the refrigerator for up to 5 days.
Calories & Nutritional Info
- Calories: Approximately 210 calories per bar
- Carbohydrates: 31g per serving
- Fat: 9g per serving
- Protein: 2g per serving
- Contains: Dairy, gluten (can be modified with substitutions)
- Not suitable for: Vegan diets without modification
Common Mistakes to Avoid
- Not chopping rhubarb evenly – inconsistent pieces lead to uneven cooking and texture issues.
- Skipping the cornstarch – this is essential for thickening the filling; without it, you’ll end up with a soggy mess.
- Rushing the cooling process – the bars need time to set properly or they’ll fall apart when cut.
- Using warm butter in the crust or topping – cold butter is crucial for achieving that perfect crumbly texture.
- Overcrowding the pan – the 9×9 size is ideal; using a different size affects baking time and texture.
Alternatives & Substitutions
- Gluten-free option: Substitute a 1:1 gluten-free flour blend and certified gluten-free oats.
- Vegan adaptation: Replace butter with cold coconut oil or a plant-based butter substitute.
- Fruit variations: Try blackberry-rhubarb, raspberry-rhubarb, or all-berry filling if rhubarb isn’t available.
- Lower sugar option: Reduce sugar in the filling to 1/2 cup and add 1 tablespoon of honey for natural sweetness.
- Nut addition: Add 1/4 cup chopped almonds or pecans to the crumb topping for extra texture and flavor.
FAQs
Can I use frozen strawberries and rhubarb?
Yes, you can use frozen fruit, but make sure to thaw completely and drain excess liquid first. Pat them dry with paper towels to prevent a soggy filling. You might need to increase the cornstarch to 2.5 tablespoons to account for the extra moisture.
Why is my filling too runny?
This usually happens when there’s too much moisture in your fruit or not enough cornstarch. Make sure to measure the cornstarch precisely, and if your fruit seems particularly juicy, add an extra teaspoon of cornstarch to compensate.
Can I make these bars ahead of time?
Absolutely! These bars actually taste better the day after baking as the flavors have time to meld. They’ll keep well in the refrigerator for up to 5 days, or you can freeze them for up to 3 months.
I can’t find fresh rhubarb. What can I substitute?
If rhubarb isn’t available, try using tart green apples with a tablespoon of lemon juice to mimic rhubarb’s tartness. Alternatively, go with an all-berry version using 4 cups of mixed berries.
Are these bars supposed to be gooey in the center?
The filling should be jammy but set—not runny or overly gooey. If your bars seem too soft in the center, they likely need more time to cool completely, or they might have needed a few extra minutes in the oven.
Final Thoughts
Strawberry Rhubarb Bars are more than just a dessert—they’re a celebration of seasonal flavors in their most delightful form. There’s something wonderfully satisfying about creating something so beautiful from simple ingredients. Whether you’re a seasoned baker or just starting out, these bars offer the perfect balance of accessibility and impression. So go ahead, embrace the sweet-tart magic and share a little joy, one bar at a time.