Serves two greedy people
For the crust
1 sheet of puff pastry, defrosted in the refrigerator until pliable but not soft
For the filling
1 cup sliced strawberries (about 10 berries)
1 teaspoon sugar (or more if needed - taste your berries so you know how much to use)
1/4 teaspoon cornstarch (if you add more sugar, use a little more cornstarch)
For the cobbler
1/4 cup all-purpose flour
1/4 teaspoon baking powder
pinch of cinnamon
pinch of salt
1/2 tablespoon chilled butter, cut onto bits
2 tablespoons heavy cream
For finishing the tart
Extra cream or milk for brushing the cobbler
1 tablespoon cinnamon sugar
Preheat oven to 350 degrees. Put a sheet of foil on a sheet pan and set aside.
For the crust, lay the puff pastry on a lightly floured surface and cut a 6" circle out of the middle (you can use a 6" plate as a guide, I eyeballed it and it worked fine). Gently line a 4" spring form pan with the puff pastry, tucking in the folds to form a smooth surface around the side of the pan. Put pan in the refrigerator while you prepare the filling and cobbler.
For the filling, in a small bowl, toss the berries with the sugar and cornstarch. Set aside.
For the cobbler, stir together the dry ingredients in a small bowl. Work in the cold butter with your fingers. You should have a lot of flakes and chunks of butter. Add the cream. With your fingers, combine until the mixture comes together. You may need a few drops more cream (I did). The moment the dough comes together, drop it on a piece of plastic wrap and put another piece of plastic wrap on top of it. Push it into a roundish shape about 1/2" thick, and using a 2 1/2" biscuit or decorative cutter, cut a single biscuit. Remove the crust from the refrigerator, arrange the berries in it and top with the biscuit.
Put the tart on the baking sheet and brush the cobbler with some cream or milk. Sprinkle on some cinnamon sugar. Bake in the preheated oven for 45 minutes to 1 hour, checking every few minutes toward the end. The tart is done when the juices are thick and bubbly, the puff pastry is browned and looks flaky and the cobbler is well-browned. Serve warm.