cup chopped Romaine lettuce
Slice off all tomato tops far enough down to make a cavity for stuffing. Hollow out the tomato with a small spoon and discard seeds. Fry bacon until crisp and crumble into small bits. Divide lettuce and stuff loosely into each tomato. Top lettuce in each tomato with a scant teaspoon of mayonnaise and a dot of mustard. Garnish with crumbled bacon.