Ingredients
Equipment
Method
Make the brown butter streusel
- Melt the unsalted butter in a small saucepan over medium heat, swirling often, until the milk solids turn deep golden brown and smell nutty, 5 to 8 minutes.
- Pour the browned butter into a medium bowl and let it cool until warm, about 10 minutes.
- Stir in the all-purpose flour, packed light brown sugar, and ground cinnamon until clumps form.
- Refrigerate the streusel while you make the cake.
Make the cake
- Heat the oven to 350°F.
- Grease a 9x13-inch baking dish.
- In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, kosher salt, ground cinnamon, ground ginger, and ground nutmeg.
- In a large bowl, whisk the granulated sugar, packed light brown sugar, large eggs, canned pumpkin puree, sour cream, neutral oil, and vanilla extract until smooth.
- Add the flour mixture to the pumpkin mixture and stir just until no dry streaks remain.
Assemble and bake
- Spread the batter evenly in the prepared baking dish.
- Scatter the chilled streusel evenly over the top.
- Bake at 350°F until the top is golden and a toothpick inserted in the center comes out with a few moist crumbs, 35 to 42 minutes.
- Cool in the dish for at least 20 minutes.
- Cut and serve.
Notes
For tender cake, stir the batter just until no dry streaks remain. Refrigerate covered for up to 4 days; freeze yes, wrapped well, for up to 2 months. For a dairy-free swap, use dairy-free butter and sour cream.
