Apple Rhubarb Crumb Cake

You know it's spring, when there is rhubarb everwhere at the markets and supermarkets. I'm a huge fan of the tart taste but I love to combine it with something sweet, like strawberries or apples. Chris' favorite cake is apple cake, so I thought why not combine a classic german apple crumb cake with rhubarb and it turned out beautifully.

Apple Rhubarb Crumb Cake
Apple Rhubarb Crumb Cake
Apple Rhubarb Crumb Cake
Apple Rhubarb Crumb Cake

Starting with a thick layer of vegan vanilla cake, next comes a layer of apple and rhubarb chunks marinated in lemon juice, sugar and vanilla and finshing it off with buttery crumbs. It's that easy!

Apple Rhubarb Crumb Cake


For the cake:

  • 3 c spelt flour
  • 1/2 c ground blanched almonds
  • 2 tsp baking powder
  • 1 tsp baking soda
  • 1/2 c raw cane sugar
  • 1 c plant milk
  • 1 tbsp apple cider vinegar
  • 1/2 c vegan butter softened
  • 1 tsp bourbon vanilla
  • pinch of salt

For the fruit topping:

  • 4 c or 3-4 medium size apples peeled, cored and cut in medium chunks
  • 3 stalks rhubarb cut into the same size as the apples
  • 3 tbsp raw cane sugar
  • juice and zest of 1 small organic lemon
  • 1/2 tsp bourbon vanilla

For the crumbs:

  • 1/2 c vegan butter softened
  • 3/4 c spelt flour
  • 3-4 tbsp blanched and sliced almonds
  • 3-4 heaping tbsp brown sugar
  • Pinch of salt


  1. Preheat the oven to 180°C (fan oven) and line/ grease a large baking pan. In a medium size bowl marinate the fruit with the sugar, vanilla and lemon. Set aside. Mix the crumb ingredients until you have small/medium chunks. Let it rest int the fridge until you're ready to top the cake.
  2. Start mixing all dry ingredients in a large bowl. Then mix the sugar with the butter until frothy. Add the rest of the wet ingredients and mix well. Don't worry if the butter is clumpy. Add the wet into the dry ingredients and mix well. Don't overmix the dough though. Pour into your baking pan.
  3. Add the fruit topping over the cake and top with the crumbs. Bake for 60-80 min depending on your oven or until a wooden skewer comes out clean. I covered the cake through half of the baking time with foil to prevent the crumbs from getting to dark.
  4. Let the cake cool completely on a cooling rack then top with confectioner's sugar if desired.


Apple Rhubarb Crumb Cake
Apple Rhubarb Crumb Cake


  1. The crumble ingredients are totally off. I had to add more than twice the amount of flour, plus I added maybe a cup of fine oat meal and a bit more sugar to make it in to a crumble.
    Did you really mean to write 1/2 cup of v.butter?

    Second, the amount of apple and rhubarb to cake was disproportionate. Maybe you need to be more specific about apple sizes, but I stuck to 3 instead of four and I still ended up with so much that I doubled my cake mixture (which luckily worked with my double batch of crumble).

    It’s in the oven… Don’t know how it’s going to turn out but fingers crossed as it was a request for my dad’s birthday.

    1. Hi Cori,

      sorry for the hassle you had with the recipe. I tested it again this weekend and everything went well. I just adjusted the crumb part: 3/4 c flour instead of 1/2. Worked out perfectly! Not sure why you had to double the size of cake, because when I baked it again, it was a lot and worked out great with the amount of fruit. I also added the amount of apples in cups as well. I hope it tasted good in the end and your dad had a good birthday!

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