Make the dough and chill. See: Hackteig _ Shortcrust pastry
Wash the plums, cut them in half and stone them.
Grease and crumble baking pan (26 springform pan).
Mix the sugar, cinnamon and almonds. Mix the plums with it.
Sprinkle the cake base generously with breadcrumbs (2 - 3 tablespoons), then cover with the plums. Spread the rest of the almond / cinnamon sugar over the top.
Preheat the oven to 180 degrees.
For the topping, mix the 2 eggs and the egg yolks with the sugar.
Liquefy the butter in a small pan and sweat the cornstarch in it. Then take the pan off the heat and let it cool down a bit. Now gradually stir in the cream.
Gradually stir the cream butter into the egg / sugar liquid. Then spread as a topping over the plums.
Bake the cake in 40 minutes at 180 degrees. Let cool in the open oven.