Why You’ll Love This Delightful Rhubarb Shortbread Bars Recipe
Hey there, fellow bakers! Are you ready to dive into a recipe that’s as easy as it is delicious? These rhubarb shortbread bars are going to become your new obsession. I promise! The tangy, slightly tart rhubarb filling perfectly complements the buttery, melt-in-your-mouth shortbread crust. It’s a delightful combination of textures and flavors that will leave you wanting more. Imagine biting into a bar, the crisp shortbread giving way to the sweet and tart rhubarb, a burst of sunshine on your tongue. That’s exactly what awaits you.
What makes this recipe truly special is its simplicity. No complicated techniques or hard-to-find ingredients here! This recipe is perfect for busy weeknights or lazy weekend afternoons. You can whip it up in a flash, and the result is absolutely stunning. It’s a crowd-pleaser that’s sure to impress your friends and family. It evokes a feeling of cozy comfort, a perfect treat to share with loved ones, or to enjoy a quiet moment with a cup of tea or coffee.
You’ll love the taste – a perfect balance of sweet and tart – and the texture – the crumbly shortbread contrasts beautifully with the slightly jammy rhubarb filling. This is not your average dessert; it’s a little slice of heaven, easy to prepare, and utterly friendly to your baking skills, no matter your experience.

What You’ll Need
This recipe calls for simple, readily available ingredients. Here’s what you’ll need to gather:
For the Shortbread Crust:
- 2 cups all-purpose flour – The base of our delightful shortbread.
- 1/2 cup granulated sugar – For sweetness and a lovely golden crust.
- 1/4 teaspoon salt – Enhances the flavors of the butter and sugar.
- 1 cup (2 sticks) unsalted butter, cold and cubed – Essential for that melt-in-your-mouth texture. Cold butter is key for a flaky crust!
For the Rhubarb Filling:
- 4 cups fresh rhubarb, chopped – The star of the show! Look for rhubarb that’s firm and vibrant in color.
- 1 1/2 cups granulated sugar – Balances the tartness of the rhubarb.
- 1/4 cup cornstarch – Thickens the rhubarb filling to a lovely, spreadable consistency.
- 1 teaspoon vanilla extract – Adds a touch of warmth and delicious aroma.
- 1/4 teaspoon salt – Balances the sweetness and enhances the flavor of the rhubarb.
- 3 large eggs, lightly beaten – Binds the filling together and adds richness.
Step-by-Step Instructions
Let’s get baking! This recipe is incredibly straightforward. Follow these steps, and you’ll be enjoying these delicious bars in no time.
Step 1: Make the Shortbread Crust
Preheat your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan. In a large bowl, whisk together the flour, sugar, and salt. Cut in the cold, cubed butter using a pastry blender or your fingertips until the mixture resembles coarse crumbs. Tip: Don’t overmix! Overmixing will make the crust tough.
Step 2: Press the Crust into the Pan
Press the crumbly mixture evenly into the prepared baking pan. Use the bottom of a measuring cup or your hands to create an even layer. Tip: Make sure the crust is firmly packed to prevent a soggy bottom.
Step 3: Prepare the Rhubarb Filling
In a separate bowl, combine the chopped rhubarb, sugar, cornstarch, vanilla extract, and salt. Gently fold in the lightly beaten eggs. Tip: Don’t overmix the filling; a few lumps are okay.
Step 4: Spread the Filling over the Crust
Pour the rhubarb filling evenly over the prepared shortbread crust. Tip: Spread it to the edges for even baking.
Step 5: Bake the Bars
Bake for 45-50 minutes, or until the crust is golden brown and the filling is set. A toothpick inserted into the center should come out with only a few moist crumbs attached. Tip: Keep a close eye on your bars during the last 10-15 minutes of baking, as ovens can vary.
Step 6: Cool and Cut
Let the bars cool completely in the pan before cutting into squares. Tip: This allows the filling to set properly and prevents crumbling.
Tips for Success
Here are a few tips to ensure your rhubarb shortbread bars turn out perfectly every time:
- Use cold butter: This is crucial for a flaky, tender crust.
- Don’t overmix the dough: Overmixing develops the gluten, resulting in a tough crust.
- Press the crust firmly into the pan: This prevents a soggy bottom.
- Don’t overbake: Overbaking will result in dry bars. Start checking for doneness around the 40-minute mark.
- Let the bars cool completely before cutting: This prevents them from crumbling.
Variations to Try
Feel free to experiment with this recipe! Here are some fun variations:
- Add a streusel topping: Combine oats, flour, brown sugar, and butter for a delicious crunchy topping.
- Use frozen rhubarb: If fresh rhubarb is unavailable, thawed frozen rhubarb works well. Just make sure to drain off any excess liquid before using.
- Spice it up: Add a pinch of cinnamon or nutmeg to the filling for a warm, comforting flavor.
- Lemon zest: A teaspoon of lemon zest adds a bright, citrusy note that complements the rhubarb beautifully.
Storing and Reheating
Store leftover rhubarb shortbread bars in an airtight container at room temperature for up to 3 days. For longer storage, freeze the bars in an airtight container or freezer bag for up to 2 months. To reheat, let the bars come to room temperature, or gently warm them in the microwave for a few seconds.

Frequently Asked Questions
Q: Can I use frozen rhubarb? A: Yes, you can use frozen rhubarb, but be sure to thaw it completely and drain off any excess liquid before adding it to the filling. This will prevent a watery filling.
Q: Can I make this recipe gluten-free? A: Yes, you can substitute gluten-free all-purpose flour for the regular flour to make this recipe gluten-free. Make sure to use a gluten-free blend designed for baking.
Q: How long will the bars last? A: Stored properly in an airtight container at room temperature, these bars will last for up to 3 days. They freeze well for up to 2 months.
Q: Can I use a different type of fruit? A: While rhubarb is a star here, you could experiment with other fruits like berries (strawberries, raspberries, blueberries) but you might need to adjust the sugar content depending on their sweetness level.
The Final Word
These delightful rhubarb shortbread bars are the perfect combination of sweet, tart, and buttery goodness. Easy to make, yet impressive to serve, they are sure to become a new favorite in your baking repertoire. The recipe is incredibly versatile, allowing you to experiment with different flavors and toppings. So, grab your ingredients, and get baking! Let me know how yours turn out in the comments below, and don’t forget to rate the recipe!

Rhubarb Shortbread Bars
Equipment
- 9×13 inch baking pan A glass or metal pan works best.
- Mixing bowls
Ingredients
Shortbread Crust
- 2 cups all-purpose flour
- 0.5 cup granulated sugar
- 0.25 teaspoon salt
- 1 cup unsalted butter cold and cubed
Rhubarb Filling
- 4 cups fresh rhubarb chopped
- 1.5 cups granulated sugar
- 0.25 cup cornstarch
- 1 teaspoon vanilla extract
- 0.25 teaspoon salt
- 3 large eggs lightly beaten
Instructions
- Preheat oven to 350°F (175°C).
- Make the shortbread crust: Combine flour, sugar, and salt in a bowl. Cut in cold butter using a pastry blender or your fingers until the mixture resembles coarse crumbs.
- Press the crust into the bottom of the prepared baking pan.
- Make the rhubarb filling: In a separate bowl, combine rhubarb, sugar, cornstarch, vanilla extract, and salt. Stir in the beaten eggs.
- Pour the rhubarb filling evenly over the shortbread crust.
- Bake for 35-40 minutes, or until the filling is bubbly and the crust is golden brown.
- Let cool completely before cutting into bars.