If you need an easy appetizer to put together, try these. Although it calls for plum tomatoes, the smaller vine tomatoes can be used. Just select tomatoes that are about the size of your baguette slices. These are very refreshing and also very attractive to serve. I love serving them in the summer when the tomato crop is at its peak - but they are equally nice served during the holidays with their red, white and green color. Note: The prep time does not include the 8 hours the mixture should chill prior to serving.