Using room temperature eggs and melted butter in the cake batter helps all the ingredients mix well and also helps enhance its texture.
Vanilla extract, salt can be a great addition to your brownies and can be great flavour enhancers.
After you add all the dry ingredients to the batter, be careful to not overmix it.
This is the most important step in order to make sure that the brownies that you are baking come out nice and clean and in proper shape.
Adding flaky salt to your brownies after removing them from oven can enhance their taste.