Pflaumenkuchen, A Rustic Plum Tart

• 2 egg yolks
• 7 tablespoons unsalted butter, softened
• 1 zest from 1 lemon
• 1 pinch salt
• 1 to 2 cups all purpose flour, or white spelt
• 1/2 cup sugar
• 2 to 3 pounds prune plums, halved and pitted
• 1 teaspoon vanilla sugar* or vanilla extract
• cinnamon for top
• 2 tablespoons unsalted butter for top
• whipped cream for serving

1. Preheat oven to 350 degrees. Grease a 9" pie pan or ovenproof dish.
2. Mix yolks with sugar using a wire whisk.
3. Add flour, pinch of salt, lemon zest and vanilla or vanilla sugar
4. Stir together then work in the butter with a wooden spoon and then your hands until you have a smooth dough.
5. Dough should not stick to your hands so add a little more flour if necessary.
6. Knead a few times on a very lightly floured board, then press into a greased 9" ovenproof dish or pie pan, pressing the dough up the sides to catch the juice.
7. Place the plums on top in a nice circular pattern, sprinkle with a little sugar and dust with cinnamon.
8. Dot with about 2 Tablespoons butter and bake about 45 minutes until edges are brown and plums are bubbling.
9. Cool a bit before serving, topped with sweetened whipped cream.
10. * Vanilla sugar can be found in some specialty stores, or you can make your own. Put a few vanilla bean pods into a jar that's tall enough, and add some sugar. Completely cover the pods and let them sit that way for awhile before you use them. Then just replace the sugar each time you use some.

egg yolks, unsalted butter, lemon, salt, flour, sugar, vanilla sugar, cinnamon, butter, whipped cream

Taken from food52.com/recipes/25594-pflaumenkuchen-a-rustic-plum-tart (may not work)