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1
Roll out your dough and press into your tart pan. Keep in the fridge until you're ready to assemble the tart.
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2
Heat the oven to 375u00b0 F.
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3
Core the tomatoes (1-inch wide). One at a time, turn the tomatoes upside-down over a bowl and use your fingers to scoop out as much of the liquid, pulp, and seeds as possible. Really tuck your fingers up into the cavities to release almost everything. Reserve liquid for another use (soup? tomato water?). Place tomatoes cored-side down on a cooling rack over a plate to let excess liquid drip out.
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4
Mix together the anchovies, capers, herbs, garlic, lemon juice, lemon zest, Parmesan, and olive oil. Taste it. Only add salt if it needs it. Set aside.
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5
In a standing mixer or by hand, mix together the egg yolk, goat cheese, cream, lemon zest, and salt until smooth (about 30 seconds). You want it spreadable but not runny (almost pourable but not quite). If it's too thick, add a splash more of cream. If too thin, add a bit more goat cheese. (It might be a bit lumpy if you do this: Don't stress). Set aside.
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6
Spread goat cheese mixture all over the bottom of the tart. On top of this mixture add a thin layer of quark.
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7
Sprinkle a small pinch of salt into each tomato cavity, and then evenly distribute the caper anchovy mixture between the 9 tomatoes. It's quite intense. A little bit goes a long way. So don't worry if it doesn't reach the tomato's brim. Wrap each tomato in a piece of prosciutto (sort of like a wide belt). It's fine to tear the slices up a bit in order to wrap the tomatoes nicely. Don't cover the tops or bottoms, and you might not need all of the prosciutto. Gently press the tomatoes down into the cheese bed. Bake for 40 to 50 minutes. About 25 minutes in, you can use a spatula to smash the cooking tomatoes down a bit. Be gentle-you don't want the tomato juice to squirt out on the cheese-it's just a tiny nudge downward. If the tart shell starts to brown too much, cover it with aluminum foil while the tomatoes cook. Remove the tart from the oven when the cheese is starting to brown and the tomatoes are starting to shrivel and darken. Cool for 30 minutes. Carefully remove the outer ring of the tart pan. Slide the tart off of the metal bottom and onto a cutting board. Cut into 9 squares. Serve right away with a crunchy green salad. It will keep in the fridge for a few days, or you can freeze it for a few months.
