Knead butter, icing sugar, almonds, egg, 1 pinch of salt and flour to a dough. Wrap the dough in foil and chill for about 30 minutes
Roll out the dough on a floured work surface until round (approx. 28 cm Ø). Line a greased tart mould (approx. 24 cm Ø) with lift-off base. Line dough with baking paper and fill with dried peas. Bake the tart on the lower shelf in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for approx. 15 minutes, blind-baking. Remove lentils and baking paper. Bake the base for another 5 minutes. Let the tart cool down on a cake rack, take it out of the tin and let it cool down
Wash and clean the rhubarb and cut into 0.5 cm thick pieces. Cook rhubarb, vanilla sugar and 50 g sugar covered for about 15 minutes until compote. Stir 1 tsp. starch and 1 tbsp. water until smooth, thicken compote with it, simmer for about 1 minute more
Wash and clean the strawberries and cut them lengthwise into thick slices. Mix egg yolks, 30 g sugar, cream, 1 teaspoon starch and kirsch in a metal bowl and whisk over a hot water bath until thick and creamy
Spread the rhubarb compote on the tarte. Spread the strawberries in a fan shape. Place the zabaglione on the tart and bake in a preheated oven (electric range: 225 °C/ convection oven: 200 °C/ gas: see manufacturer) for approx. 10 minutes until golden brown. Remove the tart and let it cool down on a cake rack
Waiting time approx. 45 minutes