I had a very specific business plan for my bakery when I started it eons ago, but I have no idea where it is. It was also for a multi-product (more than cookies) brick-and-mortar bakery, assuming the purchase of a particular space. I'm not sure it would even be helpful if I knew where to start looking for it, because it was so tailored to my specific market and circumstance.
I'm not sure if you've approached your local SCORE (https://www.score.org), but they might be better able to assist with generic business plan formats/templates. They provide free business startup advice to small businesses of all kinds.