You're going to need either a food processor or a blender! I use and love this food processor. I use it near daily for things like grating cheese and slicing veggies.  I use this blender, though I admit that I don't use it often and it's probably overkill if you don't make a lot of smoothies or blended soups. Some people are just blender people and some are not. I'm not, but I do keep one on hand because every now and then I need it! Another option would be an immersion blender, though I admit I've never tried it for this recipe. If you have one hand, I do believe it'd work just fine.