Rhubarb and Custard Crumble Bars combine the tartness of fresh rhubarb with a smooth custard layer, all topped with a buttery crumble. This delightful dessert is perfect for any occasion, inviting you to enjoy its vibrant flavors and comforting textures. Whether you’re hosting a gathering or simply treating yourself, these bars will surely impress.

Recipe Information

Prep Time: 30 minutes
Cook Time: 45 minutes
Total Time: 1 hour 15 minutes
Servings: 16 bars
Difficulty Level: Easy

Nutrition Information

Calories per serving: 223
Protein: 3g
Carbohydrates: 30g
Fat: 10g
Fiber: 1g
Sugar: 10g
Sodium: 80mg

Why Make This Rhubarb and Custard Crumble Bars

Rhubarb and Custard Crumble Bars offer a delightful blend of flavors and textures. The tartness of fresh rhubarb beautifully balances the creamy custard, while the crumble topping adds a satisfying crunch. These bars are not only pleasing to the palate but also visually appealing with their layers of vibrant colors, making them a wonderful centerpiece for your dessert table. Plus, they are easy to make, making them accessible for bakers of all skill levels.

How to Make Rhubarb and Custard Crumble Bars

Ingredients:

14 oz fresh rhubarb, trimmed and chopped
5.3 oz granulated sugar
1 tablespoon fresh lemon juice
1 tablespoon cornstarch
8.8 oz all-purpose flour
3.5 oz rolled oats
5.3 oz unsalted butter, cold and cubed
3.5 oz light brown sugar
1/2 teaspoon salt
10 fl oz whole milk
2 large egg yolks
2.1 oz granulated sugar
2 tablespoons cornstarch
1 teaspoon vanilla extract

Directions:

Step 1: Preparation

Preheat your oven to 350°F and line a 9-inch square baking pan with parchment paper, ensuring that there is enough overhang for easy removal later.
Step 2: Cooking the Rhubarb

In a saucepan, combine the chopped rhubarb, 5.3 oz of granulated sugar, lemon juice, and 1 tablespoon of cornstarch. Cook over medium heat, stirring frequently, until the rhubarb softens and the mixture thickens, approximately 8 to 10 minutes. Afterward, set it aside to cool.
Step 3: Mixing the Crumble

In a large bowl, mix together the all-purpose flour, rolled oats, light brown sugar, and salt. Rub in the cold and cubed butter using your fingertips or a pastry cutter until the mixture resembles coarse breadcrumbs.
Step 4: Baking the Base

Press two-thirds of the crumble mixture firmly into the bottom of the prepared pan to create an even base. Reserve the remaining crumble for the topping. Bake the base in the preheated oven for 15 minutes until lightly golden, then remove from the oven and let it cool slightly.
Step 5: Preparing the Custard

In a saucepan, heat the whole milk until steaming but not boiling. In a separate bowl, whisk together the egg yolks, 2.1 oz of granulated sugar, and 2 tablespoons of cornstarch until smooth. Gradually pour the hot milk into the egg mixture while whisking constantly to temper the eggs. Return the mixture to the saucepan and cook over medium heat, stirring continuously until thickened, around 2 to 3 minutes. Remove from heat and stir in the vanilla extract.
Step 6: Assembling and Baking

Spread the cooled rhubarb filling evenly over the baked base. Pour the custard layer over the rhubarb, then sprinkle the reserved crumble mixture evenly across the top. Bake for an additional 30 minutes until the crumble is golden and the custard is just set.
Step 7: Cooling and Serving

Allow the bars to cool completely in the pan. Refrigerate for at least 2 hours before lifting them out using the parchment paper and cutting into 16 bars.

How to Serve Rhubarb and Custard Crumble Bars

These bars are delightful served fresh out of the refrigerator when chilled, enhancing their refreshing flavor. They pair wonderfully with a dollop of whipped cream or a scoop of vanilla ice cream for an extra indulgence. Consider serving them as a sweet treat at a picnic or as a comforting dessert after dinner.

How to Store Rhubarb and Custard Crumble Bars

Store the bars in an airtight container in the refrigerator, where they will keep well for up to 5 days. If you want to prepare them in advance, you can also freeze them. Just ensure they are completely cooled, cut into bars, and wrapped tightly. They can be stored in the freezer for up to 2 months. Thaw them in the refrigerator before serving.

Expert Tips for Perfect Rhubarb and Custard Crumble Bars

Selecting Rhubarb: Choose firm, bright stalks of rhubarb for the best flavor.
Chilling Butter: Make sure your butter is cold for a crumbly texture—this results in a better crumble topping.
Cooling Time: Allow the bars to cool completely; this helps them set and makes slicing easier.
Adjust Sweetness: If you prefer a sweeter dessert, you can increase the sugar in the rhubarb mixture slightly.
Top Variations: Consider adding spices like cinnamon or nutmeg to the crumble for a warm flavor profile.

Delicious Variations

Berry Boost: Mix in some strawberries or raspberries with the rhubarb for a mixed fruit crumble.
Nutty Delight: Add chopped nuts, like almonds or walnuts, to the crumble for added texture.
Gluten-Free Option: Substitute the all-purpose flour with a gluten-free baking blend to accommodate dietary needs.

Frequently Asked Questions

Can I use frozen rhubarb?
Yes, you can use frozen rhubarb. Just ensure to thaw it and drain excess moisture before using it in the recipe.
Can I make this recipe dairy-free?
Absolutely! Swap the whole milk for a plant-based milk and use a dairy-free butter alternative for the crumble.
How long do these bars last?
When stored correctly in an airtight container, they will last in the refrigerator for up to 5 days.
Can I double the recipe?
Yes, you can double the ingredients and bake in a larger pan. Just adjust the baking time as needed, keeping an eye on the bars for doneness.
What’s the best way to cut these bars?
Use a sharp knife and ensure they are well-chilled before slicing for cleaner cuts.

Conclusion

Rhubarb and Custard Crumble Bars are a delightful treat that combines the tangy brightness of rhubarb with the creaminess of custard, all enveloped in a buttery crumble. They are perfect for any occasion, easy to prepare, and sure to impress guests and family alike. So gather your ingredients, follow this simple recipe, and enjoy the deliciousness you’ve created! Happy baking!