A nice, fluffy and juice layer of cake underneath a fresh and sweet layer of rhubarb topped with a healthy and crispy almond oat crumble. Is there anything else you want? Maybe having this healthy rhubarb crumble cake with a nice cup of coffee? you better don’t say no!
Why crumble cake?
Crumble cakes are one of my favourites. I love the different tastes and textures in each layer and the combination of them melting together in my mouth. Also, I think they are very fun to make and they always have something fresh in them with the fruits. I already have one crumble cake on my blog, an apple crumble cake, and it is so good! In this recipe I just added a spring twist on it instead of a fall one! Imagine this cake as a mix between my healthy apple crumble cake and my rhubarb compote!
I had my first crumble cake about 2 years ago. It actually also was a rhubarb one, and it was amazing! I can remember it very well because it was at a small café in Dublin where they had soo many different cakes! I shared one piece with my friends and let me tell you, it was amazing! So when I saw all the fresh rhubarb at the farmers market the other day, I decided to try to recreate it, but make it healthier. And let me tell you, I did not expect it to turn out THAT GOOD. I thought it would be fine but when I tried the first slice, I just wanted to eat the whole tray before photographing it. It is insane!! And really, it does not taste healthy or boring at all.
The layers:
The first layer is kind of a biscuit layer but a little healthier. It essentially comes down to only 5 ingredients! Who thought that you could make a cake with 4 ingredients only? Eggs, maple syrup, apple sauce (Apfelmuß in German, because so many asked me what this was), wholegrain flour, baking powder. That is it. The egg whites are separated from the yolks and whipped up until super fluffy and stiff. This makes the cake really airy. The applesauce makes it really juicy and the maple syrup makes it sweet. Both are combined with the egg yolk. Afterwards, the flour and baking powder as well as the egg whites are folded in. This need to be pre-baked a little.
The second, and middle layer is a fruit layer. This is even easier than the first one. You do not even need to peel the rhubarb (if you buy organic one preferably), just cut it into smaller pieces. Add it to a pot with some lemon juice and a date to sweeten it up (could use sugar or honey as well) and a splash of water. The heating up helps it to get a little softer and absorb the flavour of the lemon and date. Then this is added on top of the biscuit layer.
The last but definitely not least layer is the crumble. Contrary to conventional crumbles it is not based of sugar, butter and flour. NO. The base are oats and almonds. I like to use sliced ones but you could also just chop the up a little. Together with some chia seeds (optional) and coconut sugar (again, another sweetener works fine too, just a liquid one will not have the same crunch effect, so I would recommend substituting it out for white or brown sugar), and a little coconut oil it creates a sticky consistency. This on top of the fruit just tastes bomb. It is kind of like granola just on top of a cake. So good.
When to enjoy best?
So honestly, you are going to want to eat this at every time of the day. And basically you could. It would even work as a nice breakfast. It has about than 2.6g fibre, 3.3g of protein, and 14.2g of carbohydrates per slice. So having two slices for breakfast with some yoghurt on top wouldn’t be unhealthy. But this also makes a great snack or dessert. Even when having guests over this will be amazing! Or take it to a picnic?
Substitutions
If you do not like rhubarb at all, but still want a crumble cake, you can also substitute them out for berries, such as strawberries. It really is versatile but I believe that the little sour taste of the rhubarb just goes really well with the sweetness of the cake. Instead of whole grain flour, you could use plain one, and instead of the maple syrup you can totally go for honey, agave of coconut sugar. If you do not have almonds on hand, you can use any other nuts as well!
I hope that you like this recipe and it gives you some inspiration for cooking healthy! Enjoy!
Happy cooking,
Katie // Une Petite Cuisiniere
Healthy Rhubarb Crumble Cake
The best cake you´ll ever have! Fluffly and juice biscuit, topped with fresh and tangy rhubarb and a healthy and crispy crumble! SO good.
What you will need
For the first layer:
- 2 eggs
- 100 g unsweetend apple sauce (Apfelmuß in Deutsch)
- 60 g Maple syrup agave, honey or sugar work too!
- 125 g wholegrain flour normal flour is fine as well
- 1 tsp baking powder
For the second layer:
- 250 g Rhubarb
- 1/2 lemon, juiced
- 1 large date (or 2 small ones, about 30g)
- a splash of water
For the thrid layer:
- 50 g oats
- 25 g sliced almonds or any nuts
- 1 tbsp chia seeds (optional)
- 1 tbsp coconut sugar (or any other sweetener of choice)
- 1 tsp vanilla extract
- 1 tbsp coconut oil
How to
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Preheat the oven to 180°C.
For the first layer seperate the egg yolks from the whites. Whip the whites until fluffy and stiff. In the meantime combine the yolks with the apple sauce and maple syrup. Combine flour and baking powder.
Once the egg whites are stiff gently fold them under the yolk mixture, along with the flour, one at a time. When combined pour it onto a baking tray lined with parchment paper. Bake for 8 minutes.
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In the meantime cut the ends of the rhubarb and wash it gently. Cut it into about 3cm (1 inch) sized pieces. Take the pit out of the date and chop it finely. Add both to a pot along with the lemon juice and a splash of water (about 2 tbsp). Bring it to a boil and simmer until the first layer is done baking.
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While the rhubarb is simmering, combine the oats, nuts and seeds in a bowl. Melt the coconut oil and combine with the sugar and vanilla. Pour it over the mixture and combine everything well. It should all stick together a bit.
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When the frist layer is done baking take it out of the oven. Add the rhubarb evenly on top and sprinkle with the crumble. Bake for another 7-10 minutes.
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Take out of the oven and let cool. Serve with some ice cream, whipped cream or a dollop of yoghurt and enjoy!