How much melted butter do you use to subsitute 3 cups vegetable oil?

Melted butter and vegetable oil are not usually interchangeable. Melted butter is a solid at room temperature, while vegetable oil is a liquid. This difference will affect the texture and consistency of your finished product.

If you are looking to substitute melted butter for vegetable oil, you will need to use approximately 1.5 cups of melted butter for every 3 cups of vegetable oil. This substitution may work for some recipes, but it is not always a perfect substitute.