Rhubarb & custard cake

Rhubarb & custard cake

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(140 ratings)

Prep: 20 mins Cook: 1 hr Plus rhubarb cooking and cooling


Serves 16
This recipe tastes even better with homegrown rhubarb

Nutrition and extra info

Nutrition: per serving

  • kcal278
  • fat15g
  • saturates9g
  • carbs34g
  • sugars21g
  • fibre1g
  • protein4g
  • salt0.5g
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  • 1 quantity Barney's roasted rhubarb (see recipe, below method)



    Botanically, rhubarb is a vegetable (it's related to sorrel and dock) but its thick, fleshy…

  • 250g pack butter, softened, plus extra for greasing



    Butter is made when lactic-acid producing bacteria are added to cream and churned to make an…

  • 150g pot ready-made custard (not the chilled kind; I used Ambrosia)
  • 250g self-raising flour
  • ½ tsp baking powder
    Baking powder

    Baking powder

    bay-king pow-dah

    Baking powder is a raising agent that is commonly used in cake-making. It is made from an alkali…

  • 4 large egg



    The ultimate convenience food, eggs are powerhouses of nutrition, packed with protein and a…

  • 1 tsp vanilla extract
  • 250g golden caster sugar
  • icing sugar, for dusting


  1. Make the roasted rhubarb first, carefully draining off the juices before you let it cool. Butter and line a 23cm loose-bottomed or springform cake tin. Heat oven to 180C/fan 160C/gas 4.

  2. Reserve 3 tbsp of the custard in a bowl. Beat the rest of the custard together with the butter, flour, baking powder, eggs, vanilla and sugar until creamy and smooth. Spoon one-third of the mix into the tin, add some of the rhubarb, then dot with one-third more cake mix and spread it out as well as you can. Top with some more rhubarb, then spoon over the remaining cake mix, leaving it in rough mounds and dips rather than being too neat about it. Scatter the rest of the rhubarb over the batter, then dot the remaining custard over. Bake for 40 mins until risen and golden, then cover with foil and bake for 15-20 mins more. It’s ready when a skewer inserted into the middle comes out clean. Cool in the tin, then dredge with icing sugar when cool.

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Comments (192)

blindtony's picture

I make this again and again! Really moist and moorish! A fab recipe!

mrsclowe's picture

O my life! This is a must bake! Absolutely delicious!

little_bear's picture

Amazing cake! I made this a few weeks ago and took it into work where it went down really well. Although I over roasted the rhubarb so most of it sunk to the bottom but no one seemed to care! Can't wait to try this with apples.

hanszinderfaan's picture

Having read all the comments I followed the ingredients to the letter. After one hours baking it was obviously far from cooked. After another 40 minutes baking the knife finally came out clean. I was surprised as the batter I thought was quite stiff before baking also despite following the layer routine, all the rhubarb ended up at the bottom of the cake. Nothing wrong with the taste though, well worth the effort, I just wish the rhubarb had been more evenly spread throughout the cake. If I make it again I would try smaller pieces of rhubarb.

ellicopter's picture

Really lovely cake, very moist, not overly sweet. I would have prefered more blobs of custard though so next time I'll blob the custard all the way through the cake too!

merc2557's picture

I made this cake this morning and as with most other posts you really have to bake it for a fair amount longer than stated , i didn't time how much longer but just kept a close eye on it ...it was worth the wait and absolutely delicious i agree with some other post that its more of a pudding type of cake and would be great warm with cream/custard or ice cream and i will definitely make it again

janaskar's picture

Read all the comments before I started, turned out wonderful! Made sure I dried the rhubarb well before roasting and allowed it to drain well after before using it. I baked the it uncovered for 60 min then covered the time stated. Tested it before taking it out with a skewer. It was delicious and was even better the days after! A new family favorite!

ugly_catfish's picture

Love this. The all in one method of the cake mix turned out surprisingly well. I also had to cook the cake for longer by 20 minutes though.
The only thing I'd change would be to be cut the rhubarb into smaller pieces before cooking because it was difficult to cut up after roasting and I think smaller pieces work in the cake.

liliaf's picture

this waas so easy to make what a lovely recipe cant wait for the
famiy to try it.Will be making this one again

chefchloe's picture

I made this for a group of friends and I've already had requests for a second one! I found I had to cook it for a bit longer than stated but I think that could be the oven settings. Great recipe, thanks!

lizziebroadley's picture

Have just put my cake in the oven so really glad I read these comments now! Not suprised it takes longer to cook as both a previous banana cake and chocolate and courgette cake took twice as long as the methods stated. Fingers crossed for a success, watch this space!

dally2's picture

A very easy very tasty cake. Good to make at the moment with the Rhubarb from the garden. I added an extra 100gs for more taste.

schnarftastic's picture

Very easy to make and tasted delicious - I added more rhubarb than suggested. Big hit in this house!

louisa22's picture

I didn't have rhubarb so used some cooked apple. The cake was moist and lovely. Would definitely make again with rhubarb.

clairemcleod's picture

One of the tastiest cakes I have ever made. Definitely a recipe to keep.

pekinduck's picture

My kids are dairy intolerant so made the custard with oatly milk. Worked well and the kids loved it.

lyndseyp's picture

easy and very delicious

misshellokitty76's picture

Made this recipie for the first time and put more rubarb in it. As for cooking time I had to bake the cake for an extra 15mins. Took the cake to work and it went time like a storm, will definatley will be making it again!

mikewayne's picture

Superb! I found the timings to be spot on. When testing with a knife be sure to avoid the custardy areas on the surface otherwise the knife is likely to come out unclean even if the cake is done.


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