Step 1

Prep. Preheat oven to 350°F. Butter a 9×13″ baking pan and set aside.

Step 2

Crumb topping. In a medium size bowl, stir together the box of cake mix, 3/4 cup butter, 1/2 cup brown sugar and 1 teaspoon cinnamon. Spread half the crumb mixture into the bottom of your pan.

Step 3

Pumpkin filling. For the second layer, combine 15 ounce can pumpkin, 1 cup sugar, 2 eggs, 5 ounces evaporated milk, 1 Tablespoon pumpkin spice and 1 teaspoon vanilla in a separate bowl. Mix until combined and then pour over your first layer.

Step 4

Add pecans. Sprinkle the remaining crumb mixture over the top. Add pecans if desired.

Step 5

Bake. Bake in the oven for 55 minutes to an hour, or until a toothpick inserted comes clean.

Step 6

Cool and serve. Allow to cool. Top with whipped cream, ice cream and/or caramel sauce if desired.