For each cookie dough flavor, most neutral-tasting oils can be used instead of vegetable oil. (They can also be made without oil : recipe).
You can experiment with your favorites, but here are some that we’ve tested already:
Some oils that work well include:
Light Olive oil
Coconut oil (when mixed 50/50 with another liquid oil)
Some oils that add a mild flavor:
Some oils that don’t work as well:
Coconut oil (by itself)