These were delicious & even TD loved them!
Not even really a recipe here - I mixed 1/2 C panko with 2 T Parmesan which was enough to cover a cookie sheet of tomatoes. Be sure to slice the tomatoes 1/4 inch thick - thinner = mush & thicker = tough.
Preheat oven to 350 degrees. Slice tomatoes and arrange on a sheet pan. Sprinkle tops with panko mixture and bake for 15 minutes. Yum! I served these with some sour cream with a bit of parmesan.