In a small bowl mash the avocado. Add tomatoes, green onions, and the lime juice and mix well. Season with salt and pepper to taste.
Turn your broiler on high. Cut baguettes in half lengthwise, but do not cut all the way through. Split open and place on a baking sheet. Place the baking sheet under the broiler and toast the baguettes for about 1 min or until lightly toasted.