Ingredients:
- 1/2 cup (113g) unsalted butter
- 3/4 cup (150g) light brown sugar
- 1 cup (125g) all-purpose flour
- 1 tbsp (8g) ground cinnamon
- 1/4 tsp (1.5g) salt
- 1 cup (245g) pumpkin puree
- 1/2 cup (120g) sour cream
- 2 large eggs
- 1 tsp (5ml) vanilla extract
- 1 3/4 cups (220g) all-purpose flour
- 1 cup (200g) granulated sugar
- 1 tbsp (6g) pumpkin pie spice
- 1 tsp (5g) baking soda
- 1/2 tsp (3g) salt
- 1/2 cup (115g) unsalted butter
- 1 cup (120g) powdered sugar
- 3 tbsp (45ml) pure maple syrup
- 2 tbsp (30ml) milk
- 1/2 tsp (2.5ml) vanilla extract
Instructions:
- Preheat oven to 350°F (180°C). Place 113g unsalted butter in a small saucepan over medium heat; melt and whisk constantly until the butter foams and brown bits form at the bottom and it smells nutty. Remove from heat immediately and cool slightly.
- In a bowl, combine the browned butter with 150g brown sugar, 125g all-purpose flour, 8g ground cinnamon, and 1.5g salt. Stir with a fork until moist crumbs form; set aside.
- In a large bowl, whisk together 245g pumpkin puree, 120g sour cream, 2 eggs, and 5ml vanilla extract until smooth.
- In a separate bowl, sift together 220g all-purpose flour, 200g granulated sugar, 6g pumpkin pie spice, 5g baking soda, and 3g salt.
- Fold the dry ingredients into the pumpkin mixture until just combined, then gently stir in 115g melted and cooled unsalted butter until the batter is velvety.
- Grease a 9x9 inch square baking pan and line with parchment paper.
- Pour half of the batter into the pan. Sprinkle half of the brown butter streusel evenly over the batter. Pour the remaining batter over the streusel and smooth it out.
- Sprinkle the remaining streusel over the top.
- Bake for 45–50 minutes. The cake is done when a toothpick inserted into the center comes out clean or with a few moist crumbs.
- Let the cake cool in the pan for 20 minutes.
- Whisk together 120g powdered sugar, 45ml maple syrup, 2.5ml vanilla extract, and 30ml milk until smooth.
- Drizzle the glaze over the cooled cake in a zig-zag pattern and cut into 9 squares.