Step 1- The dough
    - Combine 350 g flour, 150 g sugar, 8 g vanilla sugar, 3 level tsp baking powder, 1 pinch salt, 175 g vegetable butter and 2 tbsp applesauce in a large bowl. This works best with your hands.
    
- Grease the baking pan with a little oil.
    
- Now press the dough into the mold with your hands and form a rim about 2 cm high.
    
- The dough should be applied quite thinly, about 0.5 cm.
    
- There should be about a "kiwi-sized" portion of the dough left at the end. More is okay, if less, the amount might not be enough for the crumble.
    
- Preheat the oven to 200°C with top and bottom heat or 180°C convection.
    
    Step 2- Poppy seed filling + first baking
    - In a small saucepan, mix one packet vanilla pudding powder with the 80 g sugar.
    
- Then add a small shot of the 400 ml oat milk and mix with a whisk until no lumps are visible.
    
- Top up with the rest of the oat milk and heat the content over medium heat, stirring constantly.
    
- Then add the 100 g ground poppy seeds and bring to the boil briefly, stirring constantly otherwise it will burn ;).
    
- Allow the mixture to cool briefly and then pour it onto the dough.
    
- Smooth the mass and shake briefly and carefully.
    
- Then bake at 180°C for 10 min.
    
    Step 3- Crumble + second baking
    - Mix the rest of the dough with 1 tablespoon of sugar and 2 tablespoons of flour, forming crumbles. The dough should be so dry that it hardly binds. If the dough is too wet simply add another
    tablespoon of flour.
    
- When the 10 minutes are over, carefully take the cake out of the oven and spread the crumble over it.
    
- Put the cake back in the oven at 180°C for another 12-15 minutes.
    
- After the baking time, remove the cake from the oven and let it cool completely. Use a sharp and thin knife to carefully loosen the edges from the cake.
    
    Enjoy!