- 1 (18.25 ounce) package yellow cake mix, divided
- 1/2 cup butter, melted
- 1 egg
- 1 (15 ounce) can pumpkin puree
- 1/2 cup brown sugar
- 1/4 cup white sugar
- 2/3 cup milk
- 3 eggs
- 1 1/2 teaspoons ground cinnamon
- 1/2 cup white sugar
- 1/4 cup butter
- Preheat oven to 350 degrees F (175 degrees C). Grease a 9×13-inch glass baking dish.
- Measure 1 cup yellow cake mix and set aside.
- Mix remaining yellow cake mix, 1/2 cup melted butter, and 1 egg together in a bowl. Spread mixture into the prepared baking dish.
- Mix pumpkin puree, brown sugar, 1/4 cup white sugar, milk, 3 eggs, and cinnamon together in a bowl. Spread pumpkin mixture over cake mix layer in the baking dish.
- Combine 1/2 cup sugar, 1/4 cup butter, and reserved 1 cup yellow cake mix together in a bowl; mash with a fork until crumbly. Spread crumb mixture over pumpkin mixture layer in baking dish.
- Bake in the preheated oven until cake is lightly browned on top and a knife inserted in the middle comes out clean, 50 to 55 minutes.