1. Wash the strawberries, drain them, remove the green leaves and cut them into pieces. Mix the strawberries with the cornstarch and vanilla bean paste in a large bowl and set aside.

2. For the streusels, mix the spelt flour with the sugar, cinnamon, and salt in a bowl. Add the cold butter in small pieces and the vanilla bean paste, and mix everything with your fingers to create different sized streusels.

3. Preheat the oven to 180°C (350°F). Transfer the strawberries to a medium-sized baking dish and distribute the streusels evenly on top. Sprinkle with some coarse brown sugar if desired. Bake the strawberry crumble for about 30-35 minutes – the streusels should be nicely browned, and the strawberries should bubble up and be visible between the streusels in several spots. Remove from the oven and let cool down a bit. Serve warm with some vanilla ice cream or vanilla sauce.