Topping (optional): 175g of chopped fruit – we recommend berries such as strawberries or raspberries or 1 teaspoon sea salt
Heat oven to 350 degrees F, 180 C, Gas 4.
Combine the chocolate, the butter and the oil into a microwave-safe bowl and microwave on high for 1 minute. Be careful not to overheat or burn the chocolate. Stir the mixture and add both sugars as well as the Maille's Balsamic Vinegar of Modena. Mix well and add the eggs. Blend until silky and set aside.
In a separate bowl, whisk all the dry ingredients. Delicately fold the dry mixture into the chocolate mixture and spread the mixture in a pre-greased square dish.
Top the brownie mixture with chopped fruit of choice if you desire. We recommend berries such as blueberries, strawberries or raspberries.
Bake on the middle rack of the oven for 24-28 minutes. If you like your brownies a little bit gooey, 24 minutes will do just fine. If you prefer them well-done, add a few minutes to the timer. Test readiness with a toothpick. If you have not topped the brownies with fruit, you can sprinkle sea salt or icing sugar on top while they are cooling.