Prepare Hummus and Tapenade 1 week in advance; cover and chill until ready to assemble. Prepare tomato mixture 6 to 24 hours ahead; cover and chill until ready to assemble. Drain as directed above. Assembled dip may be covered and chilled up to 1 hour before serving.
*Tip for quicker preparation:
Instead of making the Hummus, use 1 1/2 cups purchased hummus . Assemble as directed above.