Hi, can i use regular vanilla yogurt in place of greek yogurt in a banana muffin recipe? Thanks in advance for the help!

If I need a thicker yogurt, I strain regular yogurt through a coffee filter or cheesecloth over a bowl for a couple hours.

Greek yogurt would produce better results, but in a pinch, vanilla yogurt might be OK. I would drain the vanilla yogurt first--Greek yogurt is much thicker than regular yogurt. And vanilla yogurt will have more sugar in it, so you might want to reduce the amount of sugar you add to the recipe.

Yes, if you have no other choice & are willing to have a different result. The vanilla yogurt will have more of both moisture and sugar than a plain Greek yogurt, and so will alter the batter. Might work, but will be different.