Preheat oven to 350.

Place tomatoes in a large bowl.

Pour Olive Oil over top and mix with your hands to spread the oil.

Place on 2 rimmed baking sheets.

Season with salt and pepper.

Bake at 350 for 35-40 minutes, or until tomatoes blister. Rotate pans half way through.

Once the tomatoes are cool enough to handle, dice them up.

You can freeze them if desired.