Here is a quick tip from RecipeTips.com. If you need to peel tomatoes before adding them to a recipe in which they are to be cooked, take your tomato, slice it in half, and place them face side down onto a microwave-safe plate or dish, and microwave them for up to five minutes. Check the tomatoes every so often throughout the five-minute cooking time. You will know the tomatoes are ready to be peeled when the skin starts to wrinkle around the edges. Use a fork; gently lift off the skin, and peel it back off the tomato. Once the skins have been removed, the tomatoes are ready to use in your favorite recipes.