Can I substitute vegetable oil for olive oil? I have vegetable oil but my recipe calls for olive oil. Will it make a difference to use the vegetable oil? Also, what would the conversion be? I'm trying to make a homemade pizza crust without yeast and this oil situation has me stumped.
You can substitute vegetable oil for olive oil, that is no problem. You won't have the flavor that olive oil brings to the party, but in the case of more refined (not extra virgin) olive oils, it really won't make much difference. Just use however much oil the recipe calls for. It'll be fine.