Jump to Recipe·Print Recipe Introduction to Rhubarb Shortbread Bars If you’re craving a dessert that’s both elegant and easy to make, these rhubarb shortbread bars are the perfect choice. With a buttery, melt-in-your-mouth shortbread crust and a sweet-tart rhubarb topping, this recipe strikes a delicious balance of texture and flavor. The tang of rhubarb pairs beautifully with the rich base, creating a treat that’s ideal for spring and summer gatherings—or just enjoying with your favorite cup of tea. Why You’ll Love This Rhubarb Shortbread Bars Sweet and Tangy Flavor: The bold taste of rhubarb shines against the buttery shortbread. Tender, Buttery Crust: Classic shortbread texture that melts in every bite. Simple and Elegant: Easy to prepare with beautiful results. Perfect for Entertaining: A refined dessert that’s easy to serve and sure to impress. Seasonal and Versatile: Great for using up fresh or frozen rhubarb from the garden or market. These rhubarb shortbread bars are a fresh twist on a classic dessert—simple to make, satisfying to eat, and perfect for any occasion. Ingredients for Rhubarb Shortbread Bars Tart rhubarb and buttery shortbread come together—let’s start with these simple, delicious ingredients. Here’s what you’ll need: All-purpose flour: This forms the base of your buttery crust, providing structure and texture. Unsalted butter: Softened butter adds richness and flavor to the crust, making it melt-in-your-mouth delicious. Powdered sugar: This sweetener gives the crust a delicate sweetness and a fine texture. Salt: Just a pinch enhances the flavors, balancing the sweetness of the bars. Granulated sugar: Used in the rhubarb filling, it helps to sweeten the tartness of the rhubarb. Rhubarb: The star of the show! Fresh or frozen, it brings that signature tangy flavor. Cornstarch: This thickener helps to bind the filling, giving it a nice consistency. Lemon juice: A splash of acidity brightens the flavors and complements the rhubarb beautifully. Vanilla extract: Adds a warm, aromatic note that enhances the overall taste. Egg: This binds the filling together, giving it a lovely texture. Baking powder: A small amount helps the filling rise slightly, creating a light texture. For those looking to mix things up, consider adding an extra tablespoon of sugar to the rhubarb mixture for a sweeter flavor. You can also substitute half of the rhubarb with strawberries for a delightful strawberry-rhubarb twist. The exact quantities for these ingredients are available at the bottom of the article for easy printing! How to Make Rhubarb Shortbread Bars Creating these Rhubarb Shortbread Bars is a straightforward process that anyone can master. Follow these simple steps, and you’ll have a delicious dessert ready in no time! Step 1: Preheat the Oven Start by preheating your oven to 350°F. This ensures that your bars bake evenly. While the oven warms up, prepare your baking dish. Grease a 9×13-inch dish or line it with parchment paper for easy removal later. Step 2: Make the Shortbread Crust In a mixing bowl, combine the all-purpose flour, softened butter, powdered sugar, and salt. Mix until the mixture resembles coarse crumbs. This is the base of your bars, so make sure it’s well combined. Once ready, press the mixture firmly into the bottom of your prepared baking dish. This creates a solid crust that will hold everything together. Step 3: Prepare the Rhubarb Filling In another bowl, toss the chopped rhubarb with granulated sugar, cornstarch, lemon juice, and vanilla extract. This mixture is where the magic happens! The sugar will help balance the tartness of the rhubarb, while the cornstarch thickens the filling. Make sure everything is well combined before moving on. Step 4: Assemble the Bars Spread the rhubarb mixture evenly over the crust you just made. Then, in a separate bowl, whisk together the egg and baking powder. Pour this egg mixture over the rhubarb layer, spreading it gently to cover. This step adds a lovely texture to the filling, making it even more delightful. Step 5: Bake Place your assembled bars in the preheated oven and bake for 35-40 minutes. Keep an eye on them! You want the top to be set and lightly golden. The aroma wafting through your kitchen will be irresistible! Step 6: Cool and Serve Once baked, allow the bars to cool completely in the pan. This is crucial for achieving the perfect texture. For the best results, chill the bars in the refrigerator for at least an hour before cutting them into squares. Trust me, the wait will be worth it! Tips for Success Use fresh rhubarb for the best flavor, but frozen works too! Don’t skip chilling the bars; it helps them set perfectly. For a cleaner cut, use a sharp knife and wipe it between slices. Experiment with spices like cinnamon for an extra flavor kick. Store leftovers in an airtight container in the fridge for up to a week. Equipment Needed 9×13-inch baking dish: A standard size for these bars; a glass or metal dish works well. Mixing bowls: Use a couple of medium-sized bowls for mixing ingredients. Whisk: Handy for combining the egg and baking powder; a fork can work too. Sharp knife: Essential for cutting the bars into neat squares. Parchment paper: Optional, but it makes for easy cleanup and removal. Variations Strawberry-Rhubarb Twist: Substitute half of the rhubarb with fresh strawberries for a sweet and tangy combination. Gluten-Free Option: Use a gluten-free all-purpose flour blend to make these bars suitable for gluten-sensitive friends. Nutty Addition: Add chopped walnuts or pecans to the crust for a delightful crunch and extra flavor. Spiced Up: Incorporate a teaspoon of ground ginger or cinnamon into the rhubarb filling for a warm, spiced flavor. Vegan Version: Replace the egg with a flaxseed egg (1 tablespoon ground flaxseed mixed with 2.5 tablespoons water) and use vegan butter for a plant-based treat. Serving Suggestions Pair these Rhubarb Shortbread Bars with a scoop of vanilla ice cream for a delightful contrast. Serve with a dollop of whipped cream to enhance the creamy texture. Enjoy alongside a cup of herbal tea or coffee for a cozy afternoon treat. For a pop of color, garnish with fresh mint leaves or a dusting of powdered sugar. FAQs about Rhubarb Shortbread Bars Can I use frozen rhubarb for this recipe? Absolutely! Frozen rhubarb works just as well as fresh. Just make sure to thaw and drain any excess moisture before using it in your filling. This will help maintain the right texture in your Rhubarb Shortbread Bars. How do I store leftover bars? Store your Rhubarb Shortbread Bars in an airtight container in the refrigerator. They’ll stay fresh for up to a week. Just remember to let them cool completely before storing to avoid sogginess! Can I make these bars ahead of time? Yes! These bars are perfect for making ahead. You can bake them a day or two in advance. Just chill them in the fridge, and they’ll be ready to serve when you are. What can I substitute for the egg? If you’re looking for an egg substitute, try a flaxseed egg. Mix 1 tablespoon of ground flaxseed with 2.5 tablespoons of water and let it sit for a few minutes until it thickens. This works great in your Rhubarb Shortbread Bars! Can I add other fruits to the filling? Definitely! Feel free to mix in other fruits like strawberries or blueberries. They’ll add a new layer of flavor to your Rhubarb Shortbread Bars, making them even more delightful! Final Thoughts Making Rhubarb Shortbread Bars is more than just baking; it’s about creating memories. The blend of buttery crust and tangy rhubarb filling brings a sense of nostalgia that warms the heart. Each bite transports me back to family gatherings, laughter, and shared stories. This recipe is a reminder that simple ingredients can create something truly special. Whether you’re enjoying them with friends or savoring a quiet moment alone, these bars are sure to bring joy. So, roll up your sleeves, embrace the process, and let the delightful aroma fill your kitchen. Happy baking! Print Rhubarb Shortbread Bars: Discover this Easy Recipe! Print Recipe 5 Stars 4 Stars 3 Stars 2 Stars 1 Star No reviews Delicious Rhubarb Shortbread Bars with a buttery crust and a sweet-tart rhubarb filling. Author: Isabella Prep Time: 15 minutes Cook Time: 40 minutes Total Time: 55 minutes Yield: 12 servings 1x Category: Dessert Method: Baking Cuisine: American Diet: Vegetarian Ingredients Scale 1x2x3x 2 cups all-purpose flour 1 cup unsalted butter, softened 1/2 cup powdered sugar 1/4 teaspoon salt 1 cup granulated sugar 2 cups rhubarb, chopped (fresh or frozen) 2 tablespoons cornstarch 1 tablespoon lemon juice 1 teaspoon vanilla extract 1 large egg 1/4 teaspoon baking powder Cook Mode Prevent your screen from going dark Instructions Preheat your oven to 350°F. Grease a 9×13-inch baking dish or line it with parchment paper. In a mixing bowl, combine the flour, softened butter, powdered sugar, and salt. Mix until it resembles coarse crumbs. Press the mixture firmly into the bottom of the prepared baking dish to form the crust. In another bowl, toss the chopped rhubarb with granulated sugar, cornstarch, lemon juice, and vanilla extract until well combined. Spread the rhubarb mixture evenly over the crust. In a separate bowl, whisk together the egg and baking powder. Pour this mixture over the rhubarb layer, spreading it gently to cover. Bake in the preheated oven for 35-40 minutes, or until the top is set and lightly golden. Allow the bars to cool completely in the pan before cutting into squares. For best results, chill the bars in the refrigerator for at least 1 hour before serving. Notes For a sweeter flavor, add an extra tablespoon of sugar to the rhubarb mixture. Try substituting half of the rhubarb with strawberries for a delicious strawberry-rhubarb twist. Nutrition Serving Size: 1 bar Calories: 180 Sugar: 10g Sodium: 50mg Fat: 8g Saturated Fat: 5g Unsaturated Fat: 3g Trans Fat: 0g Carbohydrates: 22g Fiber: 1g Protein: 2g Cholesterol: 30mg