Strawberry Crumble

Bahan-bahan (6 porsi)

• 3/4 cup rolled oats / oatmeal ((quick cooking is ok))
• 3/4 cup white flour (, plain/all purpose)
• 3/4 cup brown sugar ((loosely packed))
• 1/2 tsp baking powder
• 3/4 tsp cinnamon powder
• Pinch of salt
• 90 g / 6 tbsp unsalted butter (, melted)
• 1 kg / 2 lb strawberries (, ripe)
• 2 1/2 tbsp cornflour / cornstarch
• 1/3 - 1/2 cup white sugar ((Note 1))
• 2 tbsp water
• 1 tsp vanilla extract
• Vanilla ice cream (, dollop cream or custard)