Best food processors of 2020 reviewed, tested and compared. How does a food processor differ from a blender in making nutbutters, etc? What does a food processor do? It helps you make many different dishes from scratch quickly and does the heavy labour of making quick homemade nutbutter, hummus, pesto, grating several potatoes in a second, shredding carrots, slicing yams, slicing potatoes for scalloped potatoes, mixing dough, grinding veggies such as corn into masa for corn tortillas , and so much more. Here are comparisons and reviews based on years of cooking experience with food processors.