For the crumbles, place 200 g flour, 1 packet of vanilla sugar, 150 g sugar, 1 pinch of salt and 150 g fat in flakes in a bowl and work into crumbles with your hands. Put them in a cold place.
Clean, wash and cut the rhubarb into pieces. Wash, clean and halve the strawberries. For the base, mix 250 g fat, 250 g sugar, 1 pinch of salt and 1 packet of vanilla sugar with the whisks of the hand mixer until creamy.
Stir in the eggs one by one. Mix 250 g flour, starch and baking powder and stir in. Put the dough on a greased fat pan of the oven (32 x 39 cm) and smooth it down. Spread strawberries and rhubarb on top.
Sprinkle with crumbles and almond flakes. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 35 minutes. Take the cake out of the oven, let it cool down and cut it into pieces.
Whipped cream is delicious with it.