Pumpkin Pie Dump Cake is a scrumptious dessert you can make a day ahead if you want. A combination of a pumpkin pie (without the crust), and a cake (without the frosting!
Preheat oven to 350°F. Lightly grease a 9"×13" pan.
Make the Pumpkin Filling
In a large bowl whisk together pumpkin, evaporated milk, eggs, sugars, vanilla, and spices until smooth.
Layer the Filling
Pour pumpkin mixture into the prepared pan, spreading evenly.
Prepare the Topping
In a separate bowl, combine cake mix and cubed butter. Use a pastry blender (or two forks) to cut butter into the mix until it resembles coarse crumbs.
Assemble
Sprinkle the crumbly cake mix evenly over the pumpkin layer. Top with pecans, if using.
Bake
Bake 60–75 minutes, or until a toothpick inserted in the center comes out clean and the top is golden brown.
Cool & Serve
Let cool 30 minutes so filling sets. Serve warm with vanilla ice cream or whipped cream.
Notes
Store in an airtight container in the fridge up to 3 days.