01 -
Preheat oven to 350°F. Lightly grease a 9×13-inch baking dish with nonstick spray or butter.
02 -
In a large mixing bowl, thoroughly whisk together pumpkin puree, granulated sugar, brown sugar, eggs, vanilla extract, pumpkin pie spice, cinnamon, salt, and evaporated milk until smooth and evenly blended. Pour the mixture into the prepared baking dish.
03 -
In a separate bowl, combine all-purpose flour, old-fashioned oats, brown sugar, ground cinnamon, and chopped pecans. Mix well, then pour in melted butter and stir until the mixture becomes crumbly. Evenly sprinkle the topping over the pumpkin filling.
04 -
Transfer the baking dish to the oven and bake for 45 to 50 minutes, or until the center is set and the topping is golden brown. Remove from oven and allow to cool before serving.