Apple Crumble cake with whiskey custard | Soulful And Healthy

Ingredients

• 4 cooking apples, peeled, cored and cut into small chunks
• 113 grams unsalted butter room temperature
• 100 grams castor sugar
• 45 ml milk
• 150 grams plain flour
• 1 tsp baking powder
• 1 tsp ground cinnamon
• 1/4 tsp salt
• Icing sugar for dusting
• 90 grams plain flour
• 25 grams oats
• 80 grams cold unsalted butter
• 90 grams castor sugar
• 1 vanilla pod
• 600 ml milk
• 4 large egg yolks
• 2 tbsp caster sugar
• 1 tbsp cornflour
• 1 shot whiskey