Step 1Mix flour, sugar, dash salt, butter and egg in food processor until dough forms. Roll out dough on floured board to fit 9-inch tart pan. Bake at 400 degrees until pale golden brown, about 15 minutes.
Step 1Place pumpkin, sugar, jaggery, milk, whipping cream, eggs, cinnamon, allspice, ginger, nutmeg, cloves and Bourbon in mixing bowl and beat until smooth and well blended.
Step 2Set tart on baking sheet for easy handling. Pour filling into tart shell. Bake at 350 degrees until filling is just set and pastry is golden, about 45 minutes. Cover pastry edge with foil if you find it is browning too quickly. Remove from oven and cool on wire rack, 2 hours. Refrigerate once completely cool.
Step 1Combine pecans, jaggery and butter. Sprinkle evenly over tart. Cover edge of pastry with foil. Set on rack 4 inches beneath broiler element and broil until topping is caramelized and bubbling, 30 to 60 seconds. Be very watchful as you do this. Serve tart at room temperature or chilled.