Preheat oven to 180 degrees celsius fan forced (190 if using conventional). Grease a large oven-proof baking dish with butter and set aside.
Place the drained, halved strawberries into a large bowl. Sprinkle over the cornflour and caster sugar and mix to coat the strawberries.TIP: Drain and discard any liquid after mixing (if there is any).
Place the strawberries into the greased baking dish.
To make the crumble, place the oats, brown sugar, plain flour and butter into a bowl. Use your fingers to squeeze and break up the lumps of butter until crumbs have formed and all of the oats and flour are completely combined with the butter.
Sprinkle the crumble over the strawberries and place into the preheated oven.
Cook for 35 minutes or until the crumble is golden and crunchy.
Thermomix Method
Preheat oven to 180 degrees celsius fan forced (190 if using conventional). Grease a large baking dish with butter and set aside.
Place the drained, halved strawberries, cornflour and caster sugar into the Thermomix bowl. Mix for 5 seconds on Reverse, Speed 1, or until combined. TIP: Drain and discard any liquid after mixing (if there is any).
Place the strawberries into the baking dish.
Rinse and dry the Thermomix bowl. Place the oats, flour, butter and sugar into the Thermomix bowl. Press Turbo a few times until you have achieved a consistent crumble mixture (and all of the dry ingredients have been completely combined with the butter).
Sprinkle the crumble over the strawberries and place into the preheated oven.
Cook for 35 minutes or until the crumble is golden and crunchy.