Pinch cayenne pepper or a couple of dashes of hot sauce
Coarse or kosher salt and freshly ground pepper to taste
Minced fresh parsley or paprikato garnish (optional)
Place the beans, shallots, olive oil, and lemon juice and zest in a food processor or blender and pulse to combine well. Add the Parmesan, cayenne or hot sauce, and salt and pepper and puree until smooth. If the dip is thick, you may add another tablespoon or two of olive oil or water.
If you like, top the dip with a sprinkle of parsley or paprika.