1. Preheat oven to 425°F. Roll out pie dough into a 9-inch plate. Prick the base with a fork, line with parchment, and fill with pie weights.
2. Bake for 15–20 minutes until just golden. Remove weights and parchment. Let crust cool completely.
3. In a bowl, stir together chopped pecans and brown sugar. Sprinkle over the cooled crust to create the praline bottom.
4. In a large bowl, beat pumpkin puree, sweetened condensed milk, eggs, brown sugar, and all spices until smooth and creamy.
5. Pour the filling over the praline bottom. Bake at 425°F for 15 minutes, then reduce heat to 350°F and bake for 40–50 more minutes or until set.
6. Cool the pie completely on a wire rack.
7. In a bowl, stir together chopped pecans, melted butter, and brown sugar for the topping. Sprinkle over the cooled pie.
8. Broil on high for 2–3 minutes or until bubbly and golden. Serve warm, chilled, or at room temp.