It’s up to you whether you grill the tomatoes or add them fresh after the cheese has bubbled. Cooked tomatoes do taste different from fresh.
Use a good mayonnaise such as Hellman’s Real Mayo, not a Miracle Whip product.
Add black pepper, chopped onions, jalapenos, pepperoncini, olives, basil, parsley or to the mayo and cheese if you want.
The beauty of these cheese toasts is that everyone can make their own.
*The only real Carbs are in the bread product you use and serving size.
Grate cheese and mix with mayonnaise (about equal amounts of each).