How to Make It
Prepare Tart: Preheat oven to 350°. Fit piecrust into a 9-inch deep-dish tart or quiche pan with removable bottom; press into fluted edges. Whisk together granulated sugar and next 3 ingredients in a large bowl. Whisk together pumpkin and next 2 ingredients in a separate bowl. Whisk pumpkin mixture into sugar mixture. Add eggs, 1 at a time, whisking until blended after each addition. Whisk in evaporated milk, and pour into crust.
Bake at 350° for 1 hour and 30 minutes or until a knife inserted in center comes out clean. Cool completely on a wire rack. Cover and chill 8 to 24 hours.
Prepare Almond Toffee: Cook brown sugar and 4 Tbsp. butter in a small skillet over medium heat, stirring constantly, until bubbly. Add almonds, and cook, stirring constantly, 2 minutes or until golden. Pour mixture onto lightly greased (with cooking spray) parchment paper; cool completely. Break into pieces.
Prepare Whipped Cream: Beat cream and 1/4 tsp. pumpkin pie spice at medium-high speed with an electric mixer until foamy; gradually add powdered sugar, beating until soft peaks form. Top tart with whipped cream; sprinkle with toffee.