For the tart crust: Add the flour, granulated sugar and salt to the bowl of a food processor and pulse until combined. Add the butter and pulse until small pebbles form. With the machine running, add the egg yolk, vanilla and water and pulse until the dough just comes together. Remove to a piece of plastic wrap and press together into a dough ball. Flatten into a disk then refrigerate, at least 30 minutes.
Meanwhile, make the honey and pine nut filling: Add the honey, brown sugar and salt to a medium saucepan over medium heat and whisk to combine. Cook, whisking occasionally, until the sugar melts, 2 to 3 minutes. Add the butter and whisk until melted. Pour the mixture into a large bowl and allow to cool for 25 to 30 minutes.
Preheat the oven to 350 degrees F.
On a lightly floured surface, roll the dough to a 13-inch circle and place in an 11-inch tart pan with a removable bottom. Chill 30 more minutes.
Prick the bottom of the tart with a fork. Place a piece of parchment in the center of the tart and fill all the way to the top with dried beans. Bake until the crust is set but still slightly pale, about 15 minutes. Allow to cool, then remove the parchment and beans.
Reduce the oven temperature to 325 degrees F.
Meanwhile, whisk the heavy cream, egg yolk, lemon zest and juice into the cooled filling. Place the cooled tart shell on a rimmed baking sheet and scatter the pine nuts inside the shell. Evenly pour the filling into the tart crust and bake until the top is golden brown, the filling is set and the very center still has a slight jiggle, 50 to 60 minutes.
Cool completely before slicing, at least 30 minutes and up to 1 hour. Serve dusted with confectioners' sugar.