Preheat oven to 350°F (177 °C) and grease a 9x13 non-stick baking pan.
In a large bowl, sift together flour, salt, baking soda, baking powder, pumpkin spice, and cinnamon. Set aside.
In a second mixing bowl, whisk together sugars, oil, eggs, and 1 can of pumpkin puree.
Add dry ingredients to wet ingredients and whisk until combined. Transfer to a prepared baking pan.
Bake at 350°F (177 °C) for 35-40 minutes or until a toothpick comes out clean when inserted in the center. Let cool completely in the pan before topping with cream cheese frosting.
How to Make Cream Cheese Frosting
In a mixing bowl of a stand mixer with a pedal attachment, beat cream cheese and sifted powdered sugar until smooth and creamy.
Add cold heavy whipping cream and beat again on low speed for about 20-30 seconds.
Spread the cream cheese frosting on the cooled pumpkin cake and sprinkle with pumpkin spice (optional).
Refrigerate for 20-30 minutes before serving.
Notes
Get all ingredients and tools ready before baking.Make sure to use Pumpkin Puree and not Pumpkin Pie Filling. These are two different ingredients.