Oh, darlings, gather ’round! Grandma Rose has a treat for you today that’ll bring back memories of sunny afternoons and the sweet-tart taste of springtime. We’re making Rhubarb Custard Bars, a recipe passed down through generations in my family. It’s a simple, comforting dessert that’s perfect for sharing with loved ones – or keeping all to yourself, I won’t judge! These rhubarb custard bars recipe are just the thing to brighten any day.
The beauty of these rhubarb custard bars lies in their simplicity. A buttery, crumbly shortbread crust topped with a tangy rhubarb filling and a creamy custard – it’s a symphony of flavors and textures that will make your taste buds sing. And don’t worry, even if you’ve never baked from scratch before, I’ll guide you through every step. It’s easier than you think, and the result is simply divine.
Why You’ll Love This Rhubarb Custard Bars Recipe
My dears, there are so many reasons to adore these rhubarb custard bars. They’re more than just a dessert; they’re a little slice of happiness. Here’s why you’ll fall head over heels for them:
- Sweet and Tart: The perfect balance of sweet custard and tart rhubarb.
- Easy to Make: Even beginner bakers can whip these up with ease.
- Crowd-Pleasing: A guaranteed hit at potlucks, picnics, and family gatherings.
- Nostalgic: Tastes just like Grandma used to make (because I am!).
- Versatile: Adaptable to different fruits and flavorings.
These rhubarb custard bars truly capture the essence of home baking. The combination of the shortbread crust, the rhubarb filling, and the creamy custard is simply irresistible. If you love to bake, this recipe please your tastebuds and warm your heart. Make the rhubarb custard bars, and you’ll see what I mean!
Ingredients for Rhubarb Custard Bars
Now, let’s gather our ingredients, darlings. Remember, the quality of your ingredients will affect the final result, so try to use the best you can find. For the best rhubarb custard bars, you will need:
- 1 1/2 cups all-purpose flour
- 1/2 cup cold butter, cubed
- 1/4 cup powdered sugar
- 1/4 teaspoon salt
- 4 tablespoons ice water
- 4 cups chopped rhubarb
- 1 cup granulated sugar
- 1/4 cup all-purpose flour
- 1/4 teaspoon ground cinnamon
- 3 large eggs
- 1 cup heavy cream
- 1 teaspoon vanilla extract

How to Make Grandma Rose’s Rhubarb Custard Bars
Alright, sweethearts, let’s get baking! Follow these simple steps, and you’ll have a pan of golden, delicious rhubarb custard bars in no time. Remember, the secret is patience and a little bit of love. If you follow this recipe, the rhubarb custard bars will come out perfectly.
- Preheat and Prep: Preheat oven to 375°F (190°C).
- Make the Crust: In a bowl, combine flour, butter, powdered sugar, and salt. Cut in butter until mixture resembles coarse crumbs.
- Add Water: Gradually add ice water, mixing until dough just comes together.
- Press and Bake: Press dough into the bottom of a 9×13 inch baking pan. Bake crust for 15 minutes.
- Make the Filling: In a bowl, combine rhubarb, granulated sugar, flour, and cinnamon.
- Whisk the Custard: In a separate bowl, whisk together eggs, heavy cream, and vanilla.
- Assemble: Pour rhubarb mixture over the baked crust.
- Top with Custard: Pour custard mixture over the rhubarb.
- Bake to Perfection: Bake for 35-40 minutes, or until custard is set and golden brown.
- Cool and Cut: Let cool completely before cutting into bars.
And there you have it! Beautiful, golden rhubarb custard bars, just like I remember making with my own grandmother. The shortbread crust should be perfectly golden, the custard filling should be set, and the rhubarb should be tender and juicy. Now, let’s talk about some tips and tricks to make sure yours turn out just right.
Pro Tips for Perfect Rhubarb Custard Bars
Here are a few of my best tips to ensure your rhubarb custard bars are a resounding success, my dears:
- Cold Butter is Key: Use very cold butter for the shortbread crust. This will create a flaky, tender crust. I sometimes even pop the butter in the freezer for 10 minutes before using it.
- Don’t Overmix the Crust: Overmixing will develop the gluten in the flour, resulting in a tough crust. Mix just until the dough comes together.
- Use Fresh Rhubarb: Fresh rhubarb has the best flavor and texture. If you can’t find fresh, frozen rhubarb will work, but be sure to thaw it and drain off any excess liquid. The rhubarb is the star of the show!
- Let it Cool Completely: This is important! The custard needs time to set properly. If you cut into the bars while they’re still warm, the custard will be runny.
- Dust with Powdered Sugar: For a pretty finishing touch, dust the cooled bars with powdered sugar before serving.
These little tricks can make all the difference. When you make the shortbread, remember to keep everything cold! These rhubarb custard bars are worth the effort.
Common Mistakes to Avoid
Even the best bakers make mistakes sometimes, darlings. Here are a few common pitfalls to watch out for when making rhubarb custard bars:
- Soggy Crust: This can happen if the crust isn’t baked long enough before adding the filling, or if the rhubarb is too wet. Make sure to bake the crust until it’s lightly golden, and drain any excess liquid from the rhubarb.
- Runny Custard: This can be caused by not baking the bars long enough, or by using too much liquid in the custard filling. Bake the bars until the custard is set and doesn’t jiggle when you gently shake the pan.
- Tough Crust: This is usually caused by overmixing the dough. Remember, mix just until the dough comes together.
- Burnt Crust: Keep an eye on your bars while they’re baking, especially towards the end. If the crust starts to brown too quickly, tent the pan with foil.
Don’t be discouraged if you make a mistake! Baking is all about learning and experimenting. Just keep practicing, and you’ll get it right eventually. If you don’t see, that these rhubarb bars are worth the effort, then make them again!
Variations on Rhubarb Custard Bars
Now, my dears, let’s talk about how you can put your own spin on these rhubarb custard bars. Baking is all about creativity, so don’t be afraid to experiment! The rhubarb custard is very versatile. Here are a few ideas:
- Strawberry Rhubarb: Add a cup of sliced strawberries to the rhubarb filling for a sweeter, more complex flavor. Strawberry rhubarb custard bars are a classic for a reason!
- Ginger Rhubarb: Add a teaspoon of ground ginger to the rhubarb filling for a warm, spicy kick.
- Lemon Rhubarb: Add the zest of one lemon to the custard filling for a bright, citrusy flavor.
- Cream Cheese Swirl: Swirl dollops of cream cheese filling (made with cream cheese, sugar, and vanilla) into the custard before baking. This will create a beautiful marbled effect and add a rich, tangy flavor.
- Nutty Crust: Add 1/2 cup of chopped nuts (such as pecans or walnuts) to the shortbread crust for added texture and flavor.
These are just a few ideas to get you started. Feel free to get creative and come up with your own variations! Maybe you’ll discover a new family favorite. If you love cream cheese, the cream cheese swirl is a must-try!
How to Store Rhubarb Custard Bars
If you happen to have any rhubarb custard bars leftover (which is unlikely!), here’s how to store them:
- Refrigerator: Store the bars in an airtight container in the refrigerator for up to 3 days.
- Freezer: For longer storage, freeze the bars for up to 2 months. Wrap them individually in plastic wrap and then place them in a freezer-safe container. Thaw in the refrigerator before serving.
Keep in mind that the crust may soften slightly after being refrigerated or frozen, but the bars will still taste delicious. If you are looking for a long term treat, you can freeze these rhubarb custard bars.
Frequently Asked Questions (FAQ)
Here are some common questions I get asked about rhubarb custard bars, my dears:
- Can I use frozen rhubarb? Yes, but thaw it completely and drain off any excess liquid before using.
- Can I make the crust ahead of time? Absolutely! You can make the crust a day or two in advance and store it in the refrigerator.
- Can I use a different type of flour? I recommend using all-purpose flour for the best results, but you can experiment with other types of flour if you like.
- Can I reduce the amount of sugar? You can reduce the amount of sugar slightly, but keep in mind that it will affect the flavor and texture of the bars.
- My custard is still jiggly after baking. Is it done? It should be slightly jiggly, but not runny. If it’s still very jiggly, bake it for a few more minutes.
If you have any other questions, don’t hesitate to ask! I’m always happy to help. Remember, don’t be afraid to experiment with these rhubarb custard bars.
Serving Suggestions for Rhubarb Custard Bars
Finally, let’s talk about how to serve these delightful rhubarb custard bars. They’re delicious on their own, but here are a few ideas to make them even more special:
- Dust with Powdered Sugar: As I mentioned before, a dusting of powdered sugar adds a pretty finishing touch.
- Top with Whipped Cream: A dollop of whipped cream is always a welcome addition.
- Serve with Ice Cream: Vanilla ice cream is a classic pairing, but you could also try rhubarb ice cream or strawberry ice cream.
- Add a Berry Garnish: A few fresh berries, such as raspberries or strawberries, add a pop of color and flavor.
- Enjoy with a Cup of Tea: Rhubarb custard bars are the perfect accompaniment to a cup of tea or coffee.
No matter how you choose to serve them, I hope you enjoy these rhubarb custard bars as much as my family does. They’re a little piece of my heart, and I’m so happy to share them with you. Now, go bake some memories, darlings! And remember, the secret ingredient is always love. These rhubarb custard bars are best served with love!

Rhubarb Custard Bars - Grumpy's Honeybunch
Ingredients
Method
- Preheat oven to 375°F (190°C).
- Make the crust: Combine flour, butter, powdered sugar, and salt. Cut in butter until coarse crumbs.
- Add ice water, mixing until dough comes together.
- Press dough into a 9x13 inch baking pan.
- Bake crust for 15 minutes.
- Make the filling: Combine rhubarb, granulated sugar, flour, and cinnamon.
- Whisk together eggs, heavy cream, and vanilla.
- Pour rhubarb mixture over the baked crust.
- Pour custard mixture over the rhubarb.
- Bake for 35-40 minutes, or until custard is set.
- Let cool completely before cutting into bars.
Notes
