Ingredients
Equipment
Method
Preheat and prep pan
- Preheat oven to 350F and grease a 9x13 pan.
Make streusel and chill
- Make the streusel by combining flour, brown sugar, cinnamon, and cold butter until crumbly, then refrigerate.
Mix cinnamon swirl
- Mix the cinnamon swirl by stirring together brown sugar, cinnamon, and melted butter.
Mix pumpkin cake batter
- Beat butter and brown sugar until smooth, then add eggs, pumpkin, sour cream, and vanilla and mix until combined.
- Fold in the dry ingredients (flour, baking powder, baking soda, pumpkin pie spice, cinnamon, and salt) just until no dry streaks remain.
Assemble and bake
- Spread half the batter into the greased pan.
- Drizzle the cinnamon swirl over the batter.
- Spread the remaining batter over the swirl layer.
- Scatter the chilled streusel generously over the top.
- Bake for 45-50 minutes, until the center is set and the streusel is golden.
Finish and serve
- Dust with powdered sugar before serving.
Notes
For clean slices, let the cake cool in the pan for at least 20 minutes before cutting. Store covered in the refrigerator up to 4 days; freeze slices (wrapped) up to 2 months. For a dairy-light option, use plain Greek yogurt in place of sour cream (similar thickness) and expect a slightly tangier crumb.
