Gather and combine wet ingredients.
Before anything, preheat your oven to 350°F.
Here's what you will first need:
- 2 sticks unsalted butter, room temperature
- 1 cup light brown sugar
- 1 cup granulated white sugar
- 2 eggs
- 1 teaspoon vanilla extract
- 1 cup pumpkin purée
Start by beating your butter until smooth. Then add the sugars until it's super light and fluffy. Next, add 1 egg at a time, continuing to beat until fully incorporated. Now, add the vanilla extract and pumpkin purée and stop beating when it appears evenly mixed.