Mango Tart with Coconut Crust

Preparation

1. Toast coconut for crust:

   Step 1

   Preheat oven to 350°F.

   Step 2

   Spread coconut in an even layer in a pie plate and toast in middle of oven, stirring occasionally, until golden, 10 to 12 minutes. (Leave oven on for baking crust.) Cool coconut to room temperature, about 10 minutes.

2. Make crust:

   Step 3

   Pulse together flour, coconut, butter, confectioners sugar, and salt in a food processor until dough just begins to form a ball. Press dough onto bottom and up side of tart pan with floured fingers, then freeze until firm, about 10 minutes. Bake in pan on a baking sheet in middle of oven until golden, about 25 minutes, then cool completely in pan on a rack.

3. Prepare filling while crust bakes:

   Step 4

   Purée chopped mango (2 1/2 cups) with sugar, lime juice, and a pinch of salt in a food processor until smooth, about 1 minute. Sprinkle gelatin over 1/4 cup purée in a heatproof bowl and let stand to soften 1 minute. Set bowl over a saucepan of simmering water and stir until gelatin is dissolved. Remove bowl from heat and stir in remaining purée.

   Step 5

   Beat cream in a large bowl with an electric mixer until it just holds stiff peaks, then fold in purée. Set bowl with filling in a larger bowl of ice and cold water and chill, stirring occasionally, until thickened, 1 to 1 1/2 hours.

4. Assemble tart:

   Step 6

   Remove side of tart pan and spoon filling into crust, smoothing top. Chill, loosely covered, until filling is set, at least 8 hours. Before serving, let stand at room temperature at least 15 minutes but no longer than 30, then scatter diced mango over top of tart, leaving a 2-inch border around edge.