1
Toss strawberries and rhubarb with sugar and vanilla. Rest 15 minutes.
2
Pour into a 28cm baking dish.
3
Rub flour, butter, brown sugar, oats, and cinnamon together until clumpy — keep some large lumps.
4
Spread crumble evenly over fruit. Do not press down.
5
Bake at 180°C for 35-40 minutes until topping is deep golden and fruit is bubbling.