Biting into a fluffy, tender homemade marshmallow is such a simple joy; you’ll never go back to store-bought. For thicker marshmallows, use an 8- or 9-inch square baking dish.

Makes: About ninety-six, one-inch marshmallows
Time: 30 minutes, plus time to set

Ingredients

• Neutral oil (like grapeseed or corn) for greasing

• 1 cup confectioners’ …