- cooking spray
- powdered sugar for coating pan and marshmallows
- 2 (1/4-ounce) envelopes of powdered unflavored gelatin
- 1 cup granulated sugar
- 2/3 cup light corn syrup
- 1/8 teaspoon salt
- 1 teaspoon pure vanilla or peppermint extract
- funfetti sprinkles
- Spray an 8x8-inch baking pan with nonstick cooking spray. Use a small sieve to dust the pan generously with confectioners' sugar, knocking out any excess.
- Put 1/3 cup water in the bowl of a stand mixer fitted with the whisk attachment. Sprinkle the gelatin into the bowl and stir briefly to make sure all the gelatin is in contact with water. Let soften while you make the sugar syrup.
- In a heavy saucepan, combine the granulated sugar, corn syrup, salt, and 1/3 cup water. Place over moderate heat and bring to a boil, stirring until the sugar is dissolved. Continue boiling without stirring for exactly 1 minute. Remove the saucepan from the heat and let stand for 10 seconds.
- With the mixer on low speed, pour the hot sugar syrup into the softened gelatin in a thin stream down the side of the bowl. Gradually increase the mixer speed to high and beat 5 minutes, until the marshmallow forms a thick ribbon when the whisk is lifted. With the mixer on low, beat in the vanilla or peppermint extract, and sprinkles.
- Scrape the marshmallow into the prepared pan (it will be very sticky) and use wet fingertips to spread it evenly and smooth the top. Let stand, uncovered at room temperature, until the surface is no longer sticky and you can gently pull the marshmallow away from the sides of the pan with your fingertips, at least 4 hours or overnight.
- Dust a cutting board with confectioners' sugar. Use a rubber spatula to pull the sides of the marshmallow from the edge of the pan (use the spatula to loosen the marshmallow from the bottom of the pan if necessary) and invert onto the cutting board. Dust the top with confectioners' sugar. Spray a cookie cutter with nonstick spray and dust with confectioner’s sugar to prevent sticking, then cut out marshmallows into desired shapes.
*Marshmallows can be stored, layered between sheets of wax paper or parchment in an airtight container in a dry place at cool room temperature, for 1 month.