Even though it is not necessary to peel fresh tomatoes in some recipes, there are times when peeling is necessary. Heat will cause the skin of a tomato to slip off quickly. To peel fresh tomatoes, submerge them in a bowl of boiling water for about 30 seconds. At the end of this time, transfer the fruit to a bowl of cold water and the skins will come right off. When slicing tomatoes for sandwiches, slice tomatoes lengthwise, to retain juice.
Serrated knives do a great job when slicing unpeeled tomatoes.
Using butter, grease a 9x13 baking dish. Repeat layering except for cheese. Cover casserole with foil and bake 30 minutes, uncover. Add final cup of cheese and bake uncovered for 10 to 15 minutes. Place in deep bowl.