Here are some pics for my roma tomatoes that I roasted. Recipe (kinda) under the photos.
I have no idea how many tomatoes to use I just did enough to fill the pan.
I am really bad about not using measurements but here is how I did it. Preheat oven to 250 degrees. rub olive oil all of the cookie pan and sprinkle with pepper, salt (I use Kosher) and Oregano and Basil (or any other herb you may want). Cut the romas in half and lay cut half down. Peel a few cloves of garlic and place them throughout the pan (I used 7). Dribble some Olive oil over the tomatoes and put more of the herbs if you like (you will be peeling the skins after they are cooked). Place in the oven for 8 hours. After taking them out and letting them cool a bit peel the skins off. Put into a freezer container with all the drippings from the pan and top off with a little olive oil. Will keep in the freezer for 6 months. I plan to use it to make pasta sauce later but you could do whatever you wanted to do, brushetta? Share your ideas, would love to do other things with it too!!