Ingredients
Equipment
Method
Preheat and prep the pan
- Preheat the oven to 350F, then line a 9x13 pan with parchment so the brownies lift out easily.
Melt the chocolate base
- Melt the butter and dark chocolate together, then cool for 10 minutes until warm but not hot.
Make the brownie batter
- Whisk in the granulated sugar, brown sugar, eggs, and vanilla until glossy and smooth.
- Fold in the all-purpose flour, cocoa powder, and salt until no dry streaks remain.
Assemble with the pumpkin swirl
- Pour the brownie batter into the prepared pan and spread into an even layer.
- Beat the pumpkin swirl ingredients until smooth, then dollop the mixture over the brownie batter.
- Use a knife to create a marbled swirl pattern, dragging through the dollops a few times without fully mixing.
Bake and cool
- Bake for 30-35 minutes at 350F until the edges are set and a toothpick comes out with moist crumbs.
- Cool completely before slicing so the swirl sets cleanly and holds its shape.
Notes
Pro tip: for clean marbling, dollop the pumpkin swirl close together and swirl lightly so you still see distinct streaks in every square. Store covered at room temperature for up to 3 days or refrigerate up to 5 days; freeze for up to 2 months. For a lower-sugar option, consider using a 1:1 baking sweetener for the granulated sugar and brown sugar (texture may be slightly softer).
