Ingredients
Method
- Preheat oven to 350°F. Line a 9x9-inch pan with parchment.
- Melt chocolate and butter together until smooth. Cool slightly.
- Whisk in both sugars until combined.
- Whisk in eggs, yolk, and vanilla.
- Fold in flour, cocoa, and salt until just combined.
- Pour batter into the pan. Dollop caramel over the top and swirl with a knife.
- Sprinkle with flaky sea salt.
- Bake 30–35 minutes until edges are set but the center is slightly jiggly.
- Cool completely in the pan (about 2 hours) before cutting into 16 squares.
