Baking is a science. Using different ingredients will always get you different results. If you want cakier brownies, try using softened butter, but if you prefer chewier brownies, oil is the way to go.
Baking is a science. Using different ingredients will always get you different results. If you want cakier brownies, try using softened butter, but if you prefer chewier brownies, oil is the way to go.