Download ImageIngredients5 ons of unsalted butter, at room temperature7 ons of bittersweat chocolate, melted1 cup of granular sugar2 tsp of vanilla extract1/4 tsp salt1 tbsp cocoa powder2 large eggs1 tsp of instant espresso powder 2 tbsp of warm water (optional)2/3 cup of all purpose flourInstructions1. Set the oven temperature at 350 degree-celcius. –2. Whisk the butter and sugar. –3. Add the eggs, vanilla extract, and espresso mixture in. Whisk until well-combined. –4. In another, mix all the dry ingredients (flour, cocoa powder, and salt). –5. Add the melted chocolate and the dry ingredient in. Mix them together. –6. Prepare a baking tray with a baking sheet. –7. Pour the batter in and spread it out. –8. Put it in the oven for about 30 minutes. Chill it out and served. Source : www.instagram.com