It is best to add in your liquids last after blending to see how much liquid you will need to get a smooth and creamy hummus. If your hummus is not as thick as desired, try these quick fixes. 1) Add more garbanzo beans (chickpeas) and blend. 2) Refrigerate your hummus for about an hour. Many times, after the hummus cools it will thicken up a bit. 3) Blend in a little creamy plain yogurt.