Start by preheating your oven to 350° F.
In a small saucepan, melt the butter on low heat. Add in the cocoa powder and instant coffee / instant espresso powder and whisk until well combined and butter is completely melted.
4 tbsp unsalted butter, 4 tbsp natural unsweetened cocoa powder, 1 tbsp espresso powder or instant coffee granules
Carefully transfer your hot butter mixture to a large bowl. Crack your egg into a small bowl, whisk, and add to your mixing bowl. Add in the white sugar, oil, vanilla and using an electric mixer, mix until well incorporated.
1/2 cup granulated sugar, 1 tbsp good quality olive or vegetable oil, 1 eggs, 1 tsp vanilla extract
Add in the chocolate chips and gradually add in the rest of the dry ingredients and mix until your batter is smooth.
1/4 cup all purpose flour, 1/8 tsp baking soda, 1/2 cup chocolate chips or a milk chocolate bar, 1/8 tsp baking powder
Line a 9x5 inch loaf pan with parchment paper and pour the brownie batter into the prepared pan.
For best results, place the pan in the middle of the oven and bake for 30 minutes.