3tablespoonsmilk(ideally whole milk) or heavy cream
1teaspoonvanilla extract
Instructions
To Make The Pumpkin Cake:
Preheat oven to 350°F.
Spray a 9x13 baking pan lightly with cooking spray. Set aside.
In a large mixing bowl, combine melted butter, canned pumpkin, eggs, vanilla extract, pumpkin pie spice and cinnamon.
Mix well until combined. Add cake mix (the dry mix) and baking soda. Beat with an electric mixer until well combined.
Pour pumpkin cake batter into prepared 9x13 pan, spreading evenly to corners.
Cinnamon Roll Swirl Filling:
In a small mixing bowl, combine softened (or melted and slightly cooled) butter, brown sugar, flour and cinnamon. Stir to combine. If very thick, you can microwave for just a few seconds to soften. Scoop cinnamon roll filling by the spoonful evenly over the pumpkin cake batter. Use a knife to swirl it throughout, evenly.
Bake cake for 25-30 minutes (or until a toothpick inserted comes out clean).
Cinnamon Roll Icing:
To make glaze, combine ingredients and stir with a whisk until combined. Spread or drizzle the icing over cake. If icing is too runny, add more powdered sugar. If icing is too thick, add a couple of tablespoons of additional milk.