Ingredients:
- 1/2 cup (115g) unsalted butter, melted
- 1 cup (200g) granulated sugar
- 1 tablespoon (13g) pure vanilla extract
- 1 large (50g) egg, room temperature
- 2/3 cup (60g) Dutch-process cocoa powder, sifted
- 3/4 cup (95g) all-purpose flour
- 1/2 teaspoon (3g) sea salt
- 1/2 cup (120g) pumpkin purée
- 1 teaspoon (2g) pumpkin pie spice
- 1 tablespoon (20g) maple syrup
Instructions:
- Preheat your oven to 350°F (180°C). Line an 8x8 inch square baking pan with parchment paper, leaving an overhang on two sides for easy removal.
- Melt the butter. Let it cool for 5 minutes so you don't cook the egg on contact.
- Whisk the sugar and butter. Do this for about 2 minutes until the mixture looks slightly pale.
- Add the egg and vanilla. Whisk vigorously until the batter looks glossy and smooth.
- Sift in the cocoa powder. Fold it in gently with your spatula until no large dry streaks remain.
- Add flour and salt. Fold just until combined. Stop as soon as the white streaks disappear. Note: Overworking the flour makes brownies tough.
- Prep the pumpkin layer. In your smaller bowl, stir together the pumpkin purée, pumpkin pie spice, and maple syrup until velvety and uniform.
- Layer the batter. Pour about 3/4 of the chocolate batter into the pan. Drop spoonfuls of the pumpkin mixture on top.
- The Swirl. Dollop the remaining chocolate batter in the gaps. Use a knife or skewer to drag through the layers until a marbled pattern emerges.
- Bake. Place in the center of the oven for 30 minutes until the edges are firm and the center barely jiggles.
- Cool completely. This is the hardest step. If you cut them hot, they will fall apart. Wait at least 1 hour for the structure to set.