Ingredients

  • 3 pounds baking potatoes, peeled and cubed
  • 1/2 cup fat-free milk
  • 1/2 cup powdered nonfat milk
  • 1 cup unsalted chicken stock
  • 3 tablespoons unsalted butter
  • 1/2 teaspoon xanthan gum
  • 1 teaspoon kosher salt
  • 1/2 teaspoon freshly ground black pepper
  • 1 large garlic clove, grated on a microplane grater
  • 1 10-ounce package frozen whole-leaf spinach, thawed
  • 2 ounces crumbled feta cheese

Method

  • Place potatoes in a Dutch oven. Cover with cool water to 2 inches above potatoes. Bring to a boil; reduce heat, and simmer 15 minutes or until very tender. Drain.
  • Pour fat-free milk into Dutch oven; gradually whisk in powdered milk. Heat over medium heat until warm (about 2 minutes), stirring constantly with a whisk until powder dissolves and mixture is slightly thickened. Remove from heat.
  • Press potatoes through a ricer into pot with milk mixture. Cover and keep warm. (There's no need to stir together yet; you can leave it as is.)
  • Combine stock and butter in a small saucepan; cook over medium-high heat until mixture simmers and butter melts. Remove saucepan from heat; whisk in xanthan gum until mixture is thick and emulsified.
  • Pour stock mixture over potato mixture; sprinkle with salt, pepper, and garlic. Stir well to combine.
  • Squeeze thawed spinach superdry in a clean kitchen towel. Stir spinach and crumbled feta cheese into potatoes. Serve soon for creamiest results.