01 -
Preheat oven to 350°F (175°C). Lightly grease a 9×13-inch (23x33 cm) baking dish for even baking.
02 -
In a large mixing bowl, thoroughly whisk together the pumpkin puree, granulated sugar, brown sugar, eggs, vanilla extract, pumpkin pie spice, cinnamon, salt, and evaporated milk until smooth and fully incorporated.
03 -
Pour the prepared filling evenly into the greased baking dish, using a spatula to smooth the surface.
04 -
In a separate bowl, combine the flour, old-fashioned oats, brown sugar, ground cinnamon, and chopped pecans. Drizzle in the melted unsalted butter and mix just until a coarse, crumbly texture forms.
05 -
Distribute the crisp topping evenly over the pumpkin filling. Bake for 45 to 50 minutes, or until the filling is set and the topping turns golden brown.
06 -
Remove from the oven and allow to cool for at least 30 minutes before cutting and serving for best texture.