Thinking about tomato sandwiches is making me hungry! I hardly buy tomatoes through out the year so I really look forward to them in my garden. I had never had this until I married my husband and now it's one of my favorites!
If you have a toaster oven it's easy:
Put cheese on bread and place in oven.
When cheese is melted, pull out and top with tomatoes, salt/pepper.
If using the stove:
Turn stove onto low-med heat
Butter bread and place face down on pan
Let bread lightly brown then flip over
Top with cheese and put the lid on so cheese will melt
Add tomatoes and salt and pepper