Dirndl Kitchen

Make the bottom crust
0 For the cookie-like cake, knead together all dough ingredients until you achieve a dough with smooth consistency.
6 Form into a ball, cover in plastic wrap and allow to rest in the fridge for 30 minutes.
2 Preheat the oven to 350℉ or 180℃ (conventional setting, NOT convection).
3 Cover a rimmed baking pan (about 17 by 11 inches or 43 by 28 centimeters) with parchment paper. It tends to stick better when you first rub some oil on the pan.
16 Roll out the dough onto the baking sheet or press it down using your fingers and palms.
4 Poke holes into the dough using a fork and par-bake for 10 minutes.
Cheesecake Layer
5 In the meantime, beat together soft butter and sugar until foamy. Add in the eggs one at a time. Add in the quark, cornstarch, lemon zest and juice and beat until incorporated.
8 Using a spatula, spread onto the par-baked crust and bake for 30 more minutes.
Fruit
9 For the topping, prep your plums by washing, cutting them in half, removing the stones and cutting into wedges (about 8 wedges per plum).
Streusel
13 For the streusel, using your hands, knead together flour, almond flour, butter and sugar, then crumble it apart with your fingers to make the streusel.
11 After the second stage of baking is finished, remove cake from the oven, and evenly distribute the plums first (I like to make pretty rows), and then the streusel.
14 Bake for another 25 minutes (you may also turn on your broiler for a couple of minutes towards the end to add an extra golden color to the streusel). 
15 Serve with some fresh whipped cream (I add a little bit of powdered sugar and some vanilla extract in mine) and a cup of coffee. Oma will be so proud!