Toasted-Marshmallow Topping

A fluffy, homemade marshmallow topping made with corn syrup, egg whites, and vanilla, then broiled until golden brown. Perfect for pies, hot chocolate, or desserts.

8 servings

20 min

Published October 4, 2025

Ingredients

•1⅛ cup light corn syrup
•1 cup water
•¾ cup sugar
•3 large egg whites
•¼ teaspoon cream of tartar
•⅛ teaspoon vanilla extract

Cooking Instructions

1.
Stir corn syrup, 1 cup water, and sugar in medium saucepan over medium-high heat until sugar dissolves. Attach candy thermometer to side of pan. Boil syrup without stirring until thermometer registers 238°F, occasionally brushing down sides of pan with wet pastry brush, about 12 minutes.
12 min
2.
Meanwhile, place egg whites, cream of tartar, and vanilla in bowl of heavy-duty mixer fitted with whisk. When thermometer in syrup registers 230°F, beat whites at medium-low speed until peaks form. When thermometer registers 238°F, pour hot syrup down sides of bowl, beating until marshmallow topping is shiny and thick, about 2 minutes.
5 min
3.
Scrape topping into glass pie dish. DO AHEAD Can be made 1 day ahead. Cover with inverted bowl (plastic wrap will stick). Let stand at room temperature. If topping hardens, microwave in 10-second intervals before browning.
2 min
4.
Preheat broiler. Broil marshmallow topping until surface is golden brown, about 1 minute. Serve immediately.
1 min

Cooking Instructions

Stir corn syrup, 1 cup water, and sugar in medium saucepan over medium-high heat until sugar dissolves. Attach candy thermometer to side of pan. Boil syrup without stirring until thermometer registers 238°F, occasionally brushing down sides of pan with wet pastry brush, about 12 minutes.

12 min

Meanwhile, place egg whites, cream of tartar, and vanilla in bowl of heavy-duty mixer fitted with whisk. When thermometer in syrup registers 230°F, beat whites at medium-low speed until peaks form. When thermometer registers 238°F, pour hot syrup down sides of bowl, beating until marshmallow topping is shiny and thick, about 2 minutes.

5 min

Scrape topping into glass pie dish. DO AHEAD Can be made 1 day ahead. Cover with inverted bowl (plastic wrap will stick). Let stand at room temperature. If topping hardens, microwave in 10-second intervals before browning.

2 min

Preheat broiler. Broil marshmallow topping until surface is golden brown, about 1 minute. Serve immediately.

1 min