Here is my extra large mixing bowl with halved Beefsteaks where I toss them with olive oil, salt, pepper and thyme. Then they are placed on a baking sheet all cut-side down in a 275F-degree oven. After one hour, they are all turned over to the other side for another hour, removed from oven, allowed to cool about a half hour, then put into freezer bags. And, no, you don't have to remove the skins. They are great added to any sauce dish, chili or even pizza. For a dish that is cooking, you can add them still frozen but for pizza you need to defrost them first to top your pizza.
Again, thank you Carol. Happy Gardening!