If you’re a fan of fruity desserts with a touch of crunch, this simple rhubarb streusel bar recipe is for you!
These bars balance the tartness of fresh rhubarb with a sweet, buttery streusel topping and a shortbread crust. Whether you’re a rhubarb lover or trying it for the first time, this recipe is sure to become a favorite.
Why You’ll Love These Rhubarb Streusel Bars
Rhubarb often gets overlooked when it comes to baking, but this humble vegetable (yes, it’s technically a vegetable!) brings a unique tartness that pairs wonderfully with sugary desserts. These bars offer a perfect mix of textures — soft, jammy rhubarb filling, buttery crust, and a crumbly streusel topping that will leave you craving more.
It’s the perfect dessert for spring, but it’s so delicious, you’ll find yourself making it all year long. I’ve been harvesting rhubarb every few days at this time of year for fresh desserts, but it can also be frozen for use later in the year.
How to Make Rhubarb Streusal Bars
Step 1: Prepare the Rhubarb Filling
Start by prepping the rhubarb. If you’re using fresh rhubarb, chop it into bite-sized pieces (about ½ inch). In a large bowl, whisk the sugar, salt, and flour together. Add in the eggs and beat until smooth. Stir the chopped rhubarb into the custard mixture until well-coated.
Step 2: Make the Streusel Crust
For the base and streusel topping, preheat your oven to 350°F. Grease and line one 9×13 OR two 8×8 baking pans with parchment paper for easy removal later. In a large bowl, mix the flour and powdered sugar. Add in the softened butter and blend it until you have a crumbly dough.
Step 3: Assemble the Bars
Press about two-thirds of the streusel mixture into the bottom of the prepared baking pan, forming a compact, even layer. This will be the crust. Bake for 10 minutes until set but not browned. Pour the rhubarb mixture over the warm crust and spread it out evenly. Sprinkle the remaining streusel mixture on top of the rhubarb filling to create a crumbly, golden topping.
Step 4: Bake and Enjoy
Bake for 35–40 minutes or until the filling is set and the edges are golden. Be sure to keep an eye on it toward the end to prevent over-baking. Once done, remove the bars from the oven and allow them to cool completely in the pan.
Step 5: Slice and Serve
When cooled, carefully lift the bars out of the pan using the parchment paper. Slice into 9 squares or rectangles and serve! These bars are perfect for any time of day, whether it’s a treat with your afternoon coffee or a dessert after dinner.
Rhubarb Streusel Bars
These delightful bars balance the tartness of fresh rhubarb with a sweet, buttery streusel topping, creating a mouthwatering treat.
Ingredients
- For the crust and topping:
- - 2 1/2 cups all-purpose flour
- - 1 cup powdered sugar
- - 1 1/4 cup softened butter
- For the filling:
- - 3 cups granulated sugar
- - 1 1/2 teaspoons salt
- - 1/2 cup all-purpose flour
- - 4 large eggs, beaten
- - 4 1/2 cups fresh chopped rhubarb
Instructions
1. Preheat the oven to 350°F. Grease one 9x13 or two 8x8 baking pans or line with parchment paper.
2. In a large bowl, mix the flour and powdered sugar. Add the softened butter and combine it until you have a crumbly dough.
3. Remove approximately 1/3 of the dough mixture, then press the remaining mixture evenly into the bottom of the baking dish. Bake for 10 minutes until set but not browned.
4. While the crust is baking, whisk the sugar, salt, and flour together in a separate bowl. Add in the eggs and beat until smooth.
5. Stir the chopped rhubarb into the custard mixture until well-coated.
6. Pour the rhubarb mixture over the warm crust and spread it out evenly. Then crumble the remaining dough mixture over the top.
7. Bake for 35–40 minutes or until the filling is set and the edges are golden.
8. Let the bars cool completely in the pan before cutting into 9 bars.
Notes
These bars are delicious when chilled, but can also be served at room temperature.
Tips for the Perfect Rhubarb Streusel Bars
- Fresh Rhubarb vs. Frozen: Fresh rhubarb is ideal for this recipe because of its vibrant color and tart flavor. However, if fresh rhubarb isn’t available, frozen rhubarb can be used. Just make sure to thaw it and drain any excess liquid before using it in the filling.
- Adjusting Sweetness: Rhubarb is naturally tart, so you can adjust the amount of sugar in the filling depending on how sweet you like your desserts. If you prefer it a little less tart, feel free to add an extra tablespoon or two of sugar.
- Storage: These bars can be stored in an airtight container at room temperature for up to 3 days or in the refrigerator for up to 5 days. They also freeze well, so feel free to double the recipe and freeze some for later!
Why Rhubarb is a Hidden Gem in Baking
Rhubarb is often overshadowed by sweeter fruits like strawberries and blueberries, but it’s a fantastic addition to baked goods for its unique flavor. It contains high levels of fiber, vitamin K, and antioxidants, making it a health-conscious way to add some tart goodness to your treats. Plus, when paired with a sweet filling or topping, it strikes a beautiful balance of flavors that’s hard to beat.
Final Thoughts
Whether you’re an experienced baker or just getting started, rhubarb streusel bars are a fun and delicious way to bring some springtime cheer into your kitchen. With their perfect balance of sweetness and tartness, they are sure to become a regular in your baking repertoire. Try them out the next time you’re craving a dessert that’s both comforting and refreshing, and watch them disappear in no time!
Happy baking!
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This looks yummy! Pinned! Thanks for sharing!