Vegan apple cake with crumbles

• 100 gr 1/2 cup vegan butter/margarine 
• 100 gr 1/2 cup sugar (e.g. coconut blossom sugar or raw cane sugar)
• 200 gr 1 cup vegan curd (yogurt works too)
• Juice & zest of ½ lemon 
• 100 ml 1/2 cup sparkling water
• 1 Tbsp flax seed flour (or any other egg replacement)
• 1 tsp cinnamon 
• 1 tsp vanilla extract 
• 300 gr 2 1/3 cup flour (I used half rice flour & half spelt flour)
• 1 tsp baking powder 
• 1 tsp baking soda 
• 1 Tbsp apple cider vinegar 
• 2-3 apples 
• Cinnamon

Crumbles:

• 30 gr 1/8 cup vegan butter/margarine 
• 30 gr 1/8 cup sugar 
• 50 gr 1/3 cup flour 
• 30 gr 1 oz. marzipan (optional)
• Pinch of lemon zest
• Cinnamon 

1. Put margarine, sugar, curd, lemon juice and lemon zest into a bowl or food processor and mix well
2. Stir in water and flax seed flour
3. Mix all dry ingredients and then stir them in
4. Finally stir in the apple cider vinegar
5. Peel the apples and cut them in pieces, then mix them with some lemon juice and cinnamon
6. Stir them into the dough
7. Grease a loaf pan and fill the dough inside
8. Preheat the oven to 180°C (356°C)
9. Put all ingredients for the crumbles into a bowl and knead it with your hands until it gets crumbly
10. Sprinkle on top of the cake
11. Bake for 50-60 minutes and check with a stick if well done