01 -
Preheat the oven to 350°F (175°C).
02 -
In a large bowl, combine the pumpkin puree, evaporated milk, eggs, granulated sugar, brown sugar, cinnamon, nutmeg, ginger, and cloves. Mix until smooth.
03 -
Pour the pumpkin mixture into a greased 9x13-inch baking dish.
04 -
Sprinkle the dry yellow cake mix evenly over the pumpkin mixture, followed by the rolled oats and chopped pecans, if using.
05 -
Drizzle the melted butter evenly over the top.
06 -
Bake for 50-60 minutes, or until the top is golden brown and a toothpick inserted into the center comes out clean.
07 -
Let cool slightly before serving.