Easy Rhubarb and Custard Tart

There are some flavor pairings that are just timeless, and for me, rhubarb and custard is at the top of that list. The sharp, tangy bite of rhubarb cuts through the rich, creamy sweetness of vanilla custard in a way that’s simply divine. This Rhubarb and Custard Tart takes that classic combination and wraps it in a buttery, homemade pastry shell. It’s an elegant dessert that looks like it came straight from a French patisserie but is surprisingly straightforward to make in your own kitchen. Perfect for spring gatherings, afternoon tea, or whenever you need a truly special treat.

Table of Contents

Contents List

Why make this Rhubarb and Custard Tart

This tart is a true showstopper that will impress your family and friends. Here’s why you’ll fall in love with it:

• Perfectly Balanced: It strikes the ideal balance between tart and sweet, with a wonderfully creamy texture.
• Buttery, Flaky Crust: The homemade pastry is crisp, tender, and worth every bit of the minimal effort it takes.
• Elegant Presentation: With its glossy, golden custard and beautiful crust, this tart is a feast for the eyes.
• Versatile Dessert: It’s sophisticated enough for a dinner party but comforting enough for a simple family dessert. If you love classic custard-based desserts, you should also try this Old-Fashioned Custard Pie.

Ingredients

Here are the ingredients you’ll need to make this stunning tart. The measurements have been converted for your convenience.

FOR THE PASTRY

• 1 1/4 cups all-purpose flour
• 5 tbsp salted butter, cold and cubed
• 3 tbsp superfine sugar (granulated sugar also works)
• 2 large eggs (1 for the pastry, 1 for the egg wash)
• 1 tbsp milk, if required

FOR THE TART FILLING

• 2 large eggs
• 2 large egg yolks
• 1/4 cup superfine sugar (granulated sugar also works)
• 1 heaping tsp vanilla paste or vanilla extract
• 1 1/4 cups heavy cream
• 1 jar (about 10-12 oz) rhubarb preserve

How to make Rhubarb and Custard Tart

Step 1: First, let’s make the sweet pastry crust. Add the flour, cold butter, and sugar to a food processor. Pulse a few times until the mixture looks like coarse breadcrumbs.

Step 2: Crack 1 egg into the food processor and pulse again just until the dough begins to clump together. If it seems too dry, add a tablespoon of milk and pulse very briefly. Don’t overmix!

Step 3: Turn the dough out onto a lightly floured surface and gently knead it into a smooth ball. Wrap it in plastic wrap and let it chill in the fridge for at least 20-30 minutes. This step is crucial for a tender crust.

Step 4: Once chilled, roll the pastry out on your floured surface to about 1/3-inch thickness, large enough to line a 9-inch tart pan (about 10 inches wide). Carefully transfer the pastry to the tart pan, pressing it gently into the bottom and up the sides. Trim any excess pastry from the edges. Prick the bottom with a fork and return it to the fridge to chill for another 10-15 minutes.

Step 5: Preheat your oven to 400°F (375°F for a fan oven). Take the chilled pastry case out of the fridge. Crumple a large piece of parchment paper, then smooth it out and use it to line the pastry shell. Fill it with pie weights or dried beans. This is called “blind baking” and prevents the crust from puffing up.

Step 6: Bake for 12 minutes. Carefully remove the tart from the oven and lift out the parchment paper and pie weights (be careful, they’ll be hot!). Lightly beat the second egg to create an egg wash and brush it all over the inside of the partially baked crust. Return it to the oven for 5 more minutes, until the pastry is glossy and golden brown. Let it cool on a wire rack.

Step 7: While the crust cools, prepare the custard. Lower the oven temperature to 275°F (250°F for a fan oven). In a large measuring cup or bowl, whisk together the 2 whole eggs, 2 egg yolks, and sugar until pale and smooth. In a small saucepan, gently warm the heavy cream and vanilla paste over low heat for a couple of minutes. Do not let it boil.

Step 8: While whisking the egg mixture constantly, slowly pour the warm cream in a thin stream. This tempers the eggs and prevents them from scrambling. Continue whisking until everything is well combined.

Step 9: Take your cooled pastry case and place it on a baking sheet for stability. Spoon the rhubarb preserve evenly over the bottom of the crust.

Step 10: To avoid disturbing the rhubarb layer, slowly pour the custard filling over the back of a spoon held close to the surface. Fill the tart case as full as you can without it spilling over the edge.

Step 11: Carefully transfer the baking sheet with the tart into the preheated oven. Bake for about 40 minutes. The custard should be just set but still have a slight wobble in the center. It will continue to set as it cools.

Step 12: Remove the tart from the oven and let it cool completely at room temperature. This can take a couple of hours. You can speed this up by placing it in the fridge once it’s no longer hot. Ensure the tart is fully cool and set before slicing and serving.

How to serve Rhubarb and Custard Tart

This tart is best served chilled to allow the custard to set fully and for clean, beautiful slices. It’s absolutely delicious on its own, showcasing the pure flavors of rhubarb and vanilla. For an extra touch, you can serve it with a dollop of freshly whipped cream or a light dusting of powdered sugar just before serving. It makes a wonderful centerpiece for a dessert table.

How to store Rhubarb and Custard Tart

Store any leftover tart in the refrigerator. Cover it loosely with plastic wrap or place it in an airtight container to keep it fresh and prevent it from absorbing any other fridge odors. It will keep well for up to 3 days. I do not recommend freezing this tart, as the custard’s texture can become watery and grainy upon thawing.

Tips to make Rhubarb and Custard Tart

Save Time with a Shortcut: If you’re short on time, this recipe is just as delicious with a high-quality store-bought sweet pastry case. Simply skip to Step 7 to prepare the filling!

Don’t Skip the Egg Wash: Brushing the partially baked crust with an egg wash creates a seal. This is a professional baker’s trick to prevent the liquid filling from seeping into the crust and making it soggy. It’s a small step that guarantees a crisp base.

Check for the Wobble: The key to a perfect custard tart is not to overbake it. You want to pull it from the oven when the center still has a distinct “jiggle” like gelatin. It will finish setting as it cools, resulting in a silky, smooth texture.

Let it Cool Completely: Be patient! Slicing into a warm custard tart can lead to a runny mess. Allowing it to cool completely (and even chill for an hour) is essential for those picture-perfect slices. If you’re a fan of impressive tarts, our Salted Caramel Tart is another must-try recipe.

FAQs About Rhubarb and Custard Tart

Can I use fresh rhubarb instead of preserve?

Absolutely! You will need to cook it down first. Chop about 3-4 stalks of fresh rhubarb and cook it in a saucepan with 1/4 cup of sugar and a splash of water over medium heat until it breaks down into a thick, jam-like compote. Let it cool completely before spreading it on the pastry base.

Why did my custard curdle or look scrambled?

This usually happens for two reasons: the cream was too hot when added to the eggs, or the tart was baked at too high a temperature. Be sure to pour the warm cream into the eggs very slowly while whisking continuously (this is called tempering), and bake the tart at the low temperature specified in the recipe.

My pastry crust is soggy on the bottom. What went wrong?

A soggy bottom is often the result of under-baking the crust during the blind-baking stage. Ensure the crust is golden brown and looks dry before you add the filling. Skipping the egg wash step can also contribute to a soggy crust, as it doesn’t create that protective seal.

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Final Thoughts

This Rhubarb and Custard Tart is a celebration of simple, beautiful ingredients coming together to create something truly special. The crisp, buttery pastry, the tangy rhubarb layer, and the unbelievably smooth vanilla custard make every bite a moment of pure bliss. It’s a recipe that feels both nostalgic and sophisticated, and it’s guaranteed to become a new favorite in your baking repertoire. Enjoy every slice!

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