Either make a pie crust from scratch or buy a pre-made pie crust
Line bottom of crust with ½ c brown sugar, ⅓ c nuts, and 3 tbsp butter.
Bake for 10 minutes.
Increase oven to 350 °F
Combine 3 c pumpkin, ¼ tsp nutmeg, ½ tsp salt, ⅔ c brown sugar, 2 c brown sugar, ½ c evaporated milk, 1 tsp flour, and ½ tsp cinnamon. Pour mixture into crust and bake for 30 minutes.