Some the best combinations around include strawberry rhubarb, rhubarb custard and strawberry shortbread. So why not combine them and create this amazing dessert a strawberry rhubarb custard shortbread crumble.
This strawberry rhubarb custard crumble is a little different from the standard crumble and that is because it is the best when cold. It can totally be eaten warm and is so good but I do prefer it cold.
Now should this technically be called a bar or square rather than a crumble. Maybe but it is a bit messy the filling tends to stay quite wet and doesn’t hold its shape. So I decided crumble was more fitting.
You though can call them whatever you like.
Strawberries and rhubarb
What a fantastic combo. They are both spring fruit meaning seasonally they are available fresh at the same time of year unlike other fruit combos we may see.
Rhubarb tends to have a really sour flavour and needs something sweet paired with it to balance it out. Strawberries when at their best are soo sweet and juicy meaning they are a perfect complement to rhubarb they balance each other out so well.
Wanting to make this recipe out of season? Can you make it with frozen fruit? Yes, you will need to defrost the fruit before hand and drain any liquid that comes of them. Because this recipe has custard you don’t want extra liquid from the fruit.
Lets make this strawberry rhubarb custard crumble
Preheat the oven to 375F, 190C, gas mark 5
Grease your baking dish. This makes the dish a lot easier to clean.
Tools you need
- Medium mixing bowls. I love stainless bowls like these ones. Click here
- Small or medium saucepan
- 8×8 or similar sized oven proof baking dish. I love pretty baking dishes like this one. Click here
- Wooden spoon or spatula
- Balloon whisk like these ones. click here
- Measuring cups and spoons
- Optionally you can use a stand mixer for the topping. I love my kitchen aid mixer click here for mine
Make the custard
The first step it to make the custard. We want it to slightly cool before adding in the fruit. It will still be really warm, don’t worry that is fine we just don’t want it piping hot.
Ingredients for custard
- Heavy whipping cream. For the US this is called heavy cream. In the UK use whipping cream, I wouldn’t suggest using double cream as the custard would be too thick. Canada it is just whipping cream I would try to find one with the highest fat content., in BC I love Avalon cream
- Eggs The recipe technically calls for 4 eggs. Except for two of the eggs we only need the yolks. Don’t throw away the whites though, why not save them and make my fluffy pancakes. Click here and get the recipe they are amazing.
- Sugar. I use a granulated cane sugar
- Vanilla extract. Always try and use the real stuff, avoid the artificial kind
In a small or medium saucepan over a medium low heat add the whipping cream. We want to slowly heat it up to the point where it is scalding hot. This is the point just before it boils. The milk will have a frothy look to it. If the element is too hot you run the risk of burning your cream. This can be easy to do.
While the milk is heating up in a medium bowl whisk together the egg and sugar. Whisk them together until the sugar has dissolved.
Once the cream is hot slowly add it to the egg and sugar mixture. To do this you need to continue to gently whisk the egg mixture as you slowly pour in the cream. Don’t beat the mixture too hard we don’t want it get all bubbly.
Once all the cream has been add, continue to mix in the vanilla and a pinch of sea salt.
Pour the custard into the 8×8 oven proof baking dish and set aside.
Fruit filling
Ingredients
- Rhubarb. Chop your rhubarb into around 1cm or half inch pieces. Need around 4 cups worth of chopped rhubarb. It tends to shrink down quite a bit once its cooked.
- Strawberries. Cut into medium bite sized pieces.
- Cornstarch. In the UK this is known as cornflour.
- Sugar. I use a granulated natural cane sugar. I love the flavour of this sugar.
If you are using frozen fruit measure them before defrosting the tend to shrink quite a bit.
In a medium bowl you just need to combine all of the ingredients together. Mix them well so that there isn’t any lumps of cornstarch.
Set to one side while we make the topping
Shortbread topping
Ingredients
- Flour, any all purpose will work
- Ground almonds. You can grind you own if you want.
- Butter. I always try to use unsalted and that is because I like to add my own salt.
- Granulated cane sugar.
- Sea salt
- Optional If you would like more of the almond flavour to come through you can add almond extract. I would suggest around 1/2 tsp to 1 tsp depending on personal preference.
If you are using a stand mixer add all the ingredients in to the bowl. Using the paddle attachment mix on a medium setting until it forms a crumbly lumpy texture. We don’t want to over mix it and form a dough.
If you are doing it by hand then begin by rubbing the flour and butter together with your finger until you get a breadcrumb consistency.
Add in the rest of the ingredients, still using your hand mix it all together thoroughly. Take small clumps of the mixture and squish together to create that lumpy texture.
Combine and bake the strawberry rhubarb custard crumble
Spoon the fruit filling over the custard evenly.
Sprinkle the shortbread topping so that it completely cover the fruit and custard.
Bake for around 35 minutes
To check the strawberry rhubarb custard crumble and make sure it is done, you can do the jiggle test. Take it out of the oven and leave for a couple of minutes then wiggle the dish gently, the crumble shouldn’t move around too much once it is done.
If you would like to eat it warm leave to cool first for around 10-15 minutes. Otherwise if you would like it cold leave it on the coulter to cool then place into the fridge over night.
The strawberry rhubarb custard crumble should last for around a week in the fridge if it is kept in an air tight container.
Strawberry, rhubarb custard shortbread crumble
The best combinations include strawberry rhubarb, rhubarb custard and strawberry shortbread. So why not combine them and bake a strawberry rhubarb custard shortbread crumble.
Ingredients
Custard
- 2 Eggs plus 2 egg yolks
- Scant 1/4 Cup Granulated sugar 40g
- 300mls Heavy whipping cream
- 1 tsp Vanilla extract
Fruit
- 4 cups Chopped rhubarb (500g)
- 2 cups Chopped strawberries (280g)
- 1/4 cup Granulated sugar (50g)
- 1 tbsp Corn starch (corn flour)
- Pinch sea salt
Shortbread topping
- 1 Cup All purpose flour (150g)
- 1/2 Cup Cold unsalted butter (150g)
- 1/3 Cup Granulated sugar (60g)
- 3/4 Cup ground almonds (85g)
- Good pinch sea salt
- Optional 1/2 - 1 tsp Almond extract
Instructions
You will need an 8x8 baking dish
Pre heat oven to 375F, 190C, gas mark 5
Custard
- Begin by making the custard. In a small saucepan slowly heat the cream to just before it boils, you will start to look slightly frothy with steam coming up. You do not want to bring it to the boil though.
- In a medium bowl add the eggs the egg yolks and sugar. whisk with a balloon whisk until the sugar has dissolved.
- Once the cream is hot we are going to slowly add it to the egg and sugar mixture. You need to continue to gently whisk the egg mixture as you slowly pour in the cream.
- Once all the cream has been add, mix in the vanilla.
- Pour the custard into an 8x8 oven proof dish and set aside.
Fruit
- Begin by cutting the fruit into bite sized pieces
- In a medium bowl combine together the rhubarb, strawberries, corn flour and sugar. Make sure to mix them together thoroughly you don't want any lumps of corn flour.
- Put to one side
Shortbread topping
- If you are using a stand mixer with the paddle attachment add all of the ingredients. Mix on a low setting until the butter has been combined, the mixture should look lumpy. You don't want to mix it for too long, we do not want it to come together as a dough.
- If you are mixing it by hand begin by rubbing the butter and flour together until you have breadcrumb like texture.
- Add in the sugar almond flour and salt, continue rubbing the ingredients in with your hands.
- Taking clumps of the mixture squash in you hands to form random clumps or dough. Just like the stand mixer we want a lumpy texture.
Assembling
- Add fruit mixture on top of the custard
- Sprinkle the topping evenly over the fruit.
Bake for 30-35 mins.
Serve by its self or with vanilla ice cream.
Notes
- Contains nuts
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