Ingredients

  • 8 ounces elbow macaroni
  • One 10-ounce package frozen chopped spinach, cooked according to package instructions and well drained
  • 2 tablespoons olive oil
  • 1 medium-size yellow onion, chopped
  • 1/2 cup unsalted raw cashews
  • 1 3/4 cups water
  • 1 1/2 cups slow-cooked or one 15.5-ounce can white beans, drained and rinsed
  • 1 tablespoon white miso paste (optional)
  • 2 teaspoons fresh lemon juice
  • 1/4 teaspoon dry mustard
  • 1/4 teaspoon cayenne pepper
  • Pinch of ground nutmeg
  • Salt
  • 1/2 cup dry bread crumbs

Method

  • Cook the macaroni in a pot of salted boiling water until al dente, about 8 minutes.
  • Drain and place in a large bowl.
  • Add the spinach and toss to combine.
  • Set aside.
  • Heat 1 tablespoon of the oil in a medium-size skillet over medium heat, add the onion, cover, and cook until softened, about 5 minutes.
  • Set aside.
  • Grind the cashews to a powder in a blender or food processor.
  • Add 1 cup of the water and blend until smooth.
  • Add the onion, beans, miso paste, if using, the remaining 3/4 cup water, the lemon juice, mustard, cayenne, and nutmeg and season with salt.
  • (The amount of salt you need depends on whether or not you use the miso paste, which tends to be salty.)
  • Blend until smooth, then taste to adjust the seasonings.
  • Pour the sauce over the macaroni and spinach and mix well.
  • Transfer the mixture to a lightly oiled 4-quart slow cooker.
  • Cover and cook on Low for 3 hours.
  • Close to serving time, heat the remaining 1 tablespoon oil in a small skillet over medium heat.
  • Add the bread crumbs, stirring to coat them with the oil.
  • Cook, stirring, until lightly toasted, 3 to 4 minutes.
  • Remove from the heat and set aside.
  • When ready to serve, sprinkle the toasted crumbs on top of the casserole.