Thaw the frozen fruits, let them drain (otherwise it will be very liquid afterwards) and add sugar (I use 2 tablespoons of sugar for this, as I like it sweet. You can also use less, the result is then only quite sour).
Knead the flour, the remaining 4 tablespoons of sugar, vanilla flavor, ground almonds / hazelnuts and butter either by hand or with the dough hook of the hand mixer to form a dough.
Put the fruits in a medium-sized baking dish. Shape the dough into small crumbles and sprinkle over the fruit. Now sprinkle with the almond slivers and bake the whole thing for approx. 20 minutes at approx. 180 ° C convection.
Finally, serve the warm crumble with vanilla ice cream.