Fudgy brookies (brownie + cookie bars)

Ingredients

• For the brownie layer: 185 g unsalted butter
• 40 g powdered milk (optional)
• 50 g cocoa powder
• 200 g 70% dark chocolate
• 3 tbsp oil (vegetable or olive)
• 3 eggs, room temperature
• 100 g brown sugar
• 190 g powdered (icing) sugar
• 66 g all-purpose flour
• 1 tbsp vanilla extract
• Pinch of salt
• 180 g milk or semisweet chocolate, chopped
• For the cookie dough: 60 g butter, melted
• 50 g brown sugar
• 30 g granulated sugar
• 25 g beaten egg (about half an egg)
• 110 g all-purpose flour
• 1/4 tsp baking soda
• 60 g chocolate chips

Instructions

1. Melt the butter with the dark chocolate and oil, then whisk in the cocoa and powdered milk until glossy.
2. In a bowl, whisk the eggs with both sugars and the vanilla until slightly thickened, then stream in the chocolate mixture.
3. Fold in the flour and salt, then the chopped milk chocolate. Pour into a lined baking pan.
4. For the cookie dough, stir the melted butter with both sugars, mix in the beaten egg, then the flour and baking soda, and finally the chocolate chips.
5. Drop spoonfuls of cookie dough over the brownie batter, pressing them in lightly.
6. Bake at 180°C (355°F) for about 40 minutes. Cool for at least 1 hour before slicing — they set as they cool.