if using fresh mushrooms clean and slice them. if using canned or jar ones drain them

fry the mushrooms in a bit of butter. you can add spices if you want ie: garlic , old bay , pepper. whatever you like or want

rinse and slice tomato

heat up a frying pan or a griddle. you can put oil or butter in it so it doesn't burn the pan if your using a frying pan

butter your bread on one side of each like your making grilled cheese

open the can of tomato soup. add in some pepper and basil. simmer to heat through

put one slice down on the griddle or pan butter side down

add sliced tomato on top

add the other slice of bread on top butter side facing you.

put the sandwich on a plate. serve with soup over top of it or in a side bowl for dipping. enjoy