Best Dark Chocolate Brownie

Preheat oven to 325ºF.

In a heatproof bowl over simmering water, melt 10 squares chocolate and butter together. Take the bowl off heat and stir in sugar, vanilla and eggs.

In a separate bowl, stir cocoa powder, salt, and flour. Add dry ingredients to the wet ingredients. Chop remaining chocolate and gently stir into batter.

Pour into a greased 8×8 baking dish (based on 16-brownie serving size) and bake for approximately 47–55 minutes in a glass baking dish or 23–27 minutes in a metal baking dish. Check with a toothpick until it comes off clean.

Let cool and serve with a dusting of powdered sugar.