For the crumbles, put flour, 75 g sugar, vanilla sugar, 1 pinch of salt and 100 g butter in pieces in a large mixing bowl. First use the dough hooks of the mixer, then work into crumbles with your hands.
Grease a casserole dish. Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Wash fresh apricots, halve and stone them. Drain the apricots from the tin. Cut apricots into slices.
Wash, clean and chop the strawberries. Mix fruits with 1 teaspoon sugar, lemon peel and lemon juice. Distribute in the mould. Sprinkle crumbles evenly over it. Bake in a hot oven for 25-30 minutes.
Remove and dust with icing sugar. Serve with vanilla ice cream or sauce.