Brownie

Name: Brownie
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Yield: 8 servings
Ingredients: 250 gr of Brown sugar; 80 gr of Cocoa powder; 250 gr of Dark cooking chocolate; 3 Medium egg; 120 gr of Plain flour; 170 gr of Unsalted butter; 2 tsp of Vanilla extract; 30 gr of Walnuts