This is one of those recipes where the title is basically the recipe. Wonderful big, fat white beans topped with an intense green sauce. I would recommend Royal Coronas but Alubia Blanca or Cassoulet beans would serve you just as well. Ta da.
To make Italian salsa verde: Pound a clove of garlic with some salt and make a paste. Add chopped fresh sage and flat-leaf parsley (about 3 parts sage to one part parsley) and continue pounding as you add really good olive oil. I use a mortar and pestle but you could also use a mini food processor. I find the simplicity of the mortar and hassle of cleaning the processor make the mortar and pestle the easier journey.