Coconut-Pecan Tart

For the Crust: Spray a 9-by-1-inch round tart pan with a removable bottom with cooking spray (or brush with oil). In a bowl, combine coconut, flour, and kosher salt. Stir in butter and syrup until mixture has the texture of wet sand and no dry flour remains (it should be crumbly but hold together when pinched between your fingers).

Sprinkle evenly over bottom of prepared pan, with slightly more of mixture at edges, then press evenly into bottom and up sides of pan (since crust is thin, it's important to distribute evenly before packing down). Refrigerate until ready to use or, covered, up to 1 day.

For the Filling: Preheat oven to 350°F. In a small saucepan, combine butter, brown sugar, cream, and kosher salt. Bring to a boil over medium-high heat; cook until thickened slightly, about 2 minutes. Let cool 10 minutes. Transfer tart pan to a rimmed baking sheet. Pour cooled butterscotch into crust, smoothing to edges with an offset spatula. Sprinkle chocolate and pecans into crust. In a bowl, whisk together condensed milk, eggs, and vanilla. Pour over chocolate-pecan mixture.

Bake until crust is golden brown and filling is bubbly in places, 30 to 35 minutes. Let cool in pan on a wire rack 20 minutes. Carefully remove sides from pan and let cool completely (if crust is sticking anywhere along sides of pan, loosen by running a paring knife up and down in sticky spots before removing). To serve, sprinkle with flaky salt and cut into fingers.