Add cauliflower to boiling water. Reduce to a simmer and cook for 8-10 minutes, or until tender. Use a slotted spoon to remove cauliflower, leaving hot water in pot for cooking green beans. Place cauliflower, cream cheese, minced garlic (add half, taste, and add more if desired), and a pinch of salt and pepper into a food processor or blender, or mash by hand until smooth. (Add hot water a tablespoon at a time to thin, if it feels too thick.) Set aside.