APPLE-RHUBARB-CRUMBLE CAKE

Ingredients for the dough:

• 60g whole wheat flour
• 190g all purpose flour
• 1/2 package active dry yeast
• 1/8 l soymilk
• 25g sugar
• 40g margarine
• 1 prepared egg-replacer
• a pinch of salt 

1. Mix the two flours in a bowl and add the yeast. Mix well and set aside.
2. In a small pot heat soymilk and margarine until it´s lukewarm and melted.
3. In a second bowl mix the milk-mixture, sugar, salt and egg-replacer and mix until everything is well combined. 
4. Slowly add the flour and knead for about 10 minutes to a compact dough. Cover with a kitchen towel and let it rise until it´s doubled in size
5. After rising, knead the dough for another 10 minutes. Then grease a baking dish and sprinkle lightly with flour. Roll out the dough and put it into the form. After that, prick the dough all over with a fork.

Ingredients for the filling:

• 3 bars rhubarb
• 2 apples
• 6 tbsp sugar (or to taste)
• 2 - 3 tbsp water
• 1 package custard powder + 3 tbsp sugar + 500ml soymilk 

1. Peel apples and rhubarb and cut into small pieces.
2. In a small pot heat the fruits, the sugar and some water until slightly soft, but not mushy.
3. Prepare a pudding with the custard powder, the sugar and the soymilk. 
4. Spread the dough with some of the pudding, you won´t need everything of it. 
5. Distribute the apple-rhubarb-mass over the dough.

Ingredients for the streusel:

• 230g all purpose flour
• 70g whole wheat flour
• 150g soft margarine
• 1 tsp cinnamon
• a pinch of salz

1. Add all ingredients into a bowl and mix by hand until it´s well combined and the mass is getting crumbly. 
2. Distribute the crumbles over the cake.
3. Bake in a 160°C oven for about 20 - 30 minutes. 
4. Let it cool completely and sprinkle with powdered sugar!