Ingredients

1 teaspoon unsalted butter, plus more for parchment paper

Extra-virgin olive oil

1 teaspoon finely chopped shallots

1 1/2 teaspoons saffron

3 pounds new potatoes, cut into 2-by-1 1/2-inch pieces

1 1/2 cups fish stock or water

Preparation

Preheat oven to 400 degrees. Butter one side of a 12-inch square of parchment paper; set aside.

Heat oil and butter in a medium ovenproof skillet over medium heat. Add shallots and saffron and cook until shallots are translucent. Add potatoes and cover with fish stock; raise heat to medium-high. Place parchment paper over potatoes, butter side down and bring to a boil.

Immediately transfer skillet to oven and cook until potatoes are tender, about 10 minutes.