Ingredients
Method
- Heat the oven to 350F (175C) and line a 9 inch pan with parchment.
- Melt butter and chocolate together and cool 5 minutes.
- Whisk in sugars, eggs and yolk for one minute until glossy.
- Stir in vanilla, cocoa, salt and espresso powder, then fold in flour.
- Spread two thirds of the batter in the pan, dot with caramel, then dollop the remaining batter on top.
- Swirl once or twice with a knife.
- Bake 32 to 36 minutes until set at the center and moist crumbs cling to a toothpick.
- Sprinkle with flaky salt, cool completely and slice.
Notes
For homemade caramel, simmer 3/4 cup sugar and 3 tablespoons water to deep amber, then whisk in butter, cream and salt. Handle hot sugar with care.
