1In nonstick skillet over medium heat, cook bacon until crisp, drain on paper towel.
With serrated Knife cut a small slice from the bottom and tops of tomatoes so they will stand up. and then cut each tomato in half crosswise. Using a teaspoon, scoop out seeds and pulp from each tomato halve leaving enough tomato to have a firm shell.
2In medium bowl, combine lettuce, mayonnaise or ranch dressing. using fingers or large spoon, fill tomato halves with lettuce mixture, sprinkle with bacon and croutons. Serve immediately.