Plantain soufflé pancakes with peanut crumble

Name: Plantain soufflé pancakes with peanut crumble
Ingredients: 50g plain flour; 1⁄2 tsp baking powder; 150g overripe plantains or bananas, plus 2 extra to serve (optional); 4 tbsp milk; vegetable oil, to fry; 4 medium eggs, separated; 60g caster sugar; 2 tbsp lemon juice; 1 egg white; 150g unsalted peanuts (or cashews); 85g caster sugar; 1 tsp chilli powder (or cayenne pepper); 1 tsp ground cinnamon; 1⁄2 tsp fine sea salt; 1g uda powder (or use 1 tsp vanilla extract); 150ml double cream; 65g crème fraîche; 55g icing sugar, sifted