How to Make Marshmallows

Co-authored by wikiHow Staff

Last Updated: July 29, 2021 References Tested

If you have never made your own marshmallows, give it a try. They are much tastier than the store-bought kind, and they are fun to make. A batch of homemade marshmallows makes a great gift, excellent s’mores, and a tasty topping for baked yams or sweet potatoes. If you are vegetarian or vegan, don't worry, there's a gelatin-free option for you as well!

Ingredients

Basic Marshmallows

3 envelopes unflavored gelatin
1 cup (240 milliliters) cold water, divided
1½ cups (340 grams) granulated sugar
1 cup (240 milliliters) light corn syrup
¼ teaspoon kosher salt
1 teaspoon vanilla extract
¼ cup (30 grams) powdered sugar
¼ cup (30 grams) cornstarch

Makes 81 marshmallows

Marshmallows without Corn Syrup

2 envelopes unflavored gelatin
1 cup (240 milliliters) cold water, divided
2 cups (450 grams) granulated sugar
½ cup (65 grams) powdered sugar
¼ teaspoon salt
2 teaspoons vanilla extract

Makes 81 marshmallows

Vegan Marshmallows

2 tablespoons (20 grams) sweet rice flour, plus extra for dusting
1½ cups (350 grams) water, divided
2 tablespoons (10 grams) agar agar flakes
1½ cups (340 grams) granulated sugar
2 tablespoons (3 grams) unflavored soy isolate powder
¼ teaspoon xanthan gum powder
¼ teaspoon guar gum powder
⅛ teaspoon cream of tartar
Pinch of salt
1½ teaspoons vanilla extract

Makes 64 marshmallows

Method 1

Method 1 of 3:

Making Basic Marshmallows

1
Mix the gelatin with ½ cup (120 milliliters) of water. Pour 3 envelopes of gelatin into the bowl of an electric mixer. Add ½ cup (120 milliliters) of cold water. Set the mixer aside so that the gelatin can "bloom."^{[1]
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- It will take about 10 minutes for the gelatin to bloom. Prepare the rest of your ingredients during this time.
- You can also use a food processor fitted with whisks instead. Don't insert the whisks just yet, however.
2
Let the gelatin and water sit for about 10 minutes while you prepare the sugar and corn syrup mixture. The gelatin will “bloom” during this time.

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3
Cook the rest of the water with the sugar, corn syrup, and salt. Pour the remaining ½ cup of water into a small saucepan. Stir in the granulated sugar, salt, and corn syrup. Let the mixture cook, covered, over medium-high heat for 3 to 4 minutes.
- Don't add the powdered sugar just yet.
4
Bring the sugar water to 240°F (115°C). Remove the lid from the saucepan and clip a candy thermometer to the side. Allow the sugar water to cook until it reaches to 240°F (115°C). This will take about 7 to 8 minutes. As soon as it reaches to 240°F (115°C), remove the saucepan from the stove.^{[2]
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5
Slowly mix the sugar water into the gelatin. Fit the whisks into your mixer or food processor. Turn the speed on to low, then slowly pour the sugar water down the sides.
6
Whip the mixture together. Once you have used up all of the sugar water, switch the speed on your mixer to high. Let it continue whipping until the mixture is thick, fluffy, and lukewarm. This will take about 12 to 15 minutes.
7
Add in the vanilla extract. Be sure to mix everything together well. If you don't like vanilla, you can omit it, or you can use a different extract, such as peppermint.^{[3]
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8
Dust a baking pan with powdered sugar and cornstarch. Mix together ¼ cup (30 grams) of powdered sugar and ¼ cup (30 grams) of cornstarch. Spread the mixture across the bottom and sides of a greased, 9 by 9-inch (22.86 by 22.86-centimeter) square baking pan.^{[4]
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- Save any leftover cornstarch/sugar for later.
9
Spread the mixture across the bottom of the pan. Use a rubber spatula to help spread the mixture from corner to corner. Dust the top of the marshmallows with more cornstarch/sugar, then save the rest for later.
- Coat the spatula with cooking oil first. This will prevent the marshmallows from sticking to it.
10
Let the marshmallows sit for at least 4 hours before cutting them. It would be even better if you let them sit overnight. Once the marshmallows are firm, turn them onto a cutting board, then cut them into 1-inch (2.54-centimeter) squares.^{[5]
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- Cut the marshmallows using a sharp knife or a pizza cutter. If the marshmallows are too sticky, coat the blade with cooking oil.
11
Dust the marshmallows before serving them. Fill a rimmed baking sheet with the rest of your cornstarch and sugar mixture. Roll the marshmallows around in the mixture to coat them. Dust off any excess cornstarch/sugar, then serve them.^{[6]
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Method 2

Method 2 of 3:

Making Marshmallows without Corn Syrup

1
Mix the gelatin with the water, then set it aside. Pour ½ cup (120 milliliters) of cold water into a small bowl. Stir in 2 envelopes of unflavored gelatin. Set the bowl aside for 10 minutes so that the gelatin can "bloom." During this time, you can prepare the rest of the ingredients.
2
Prepare a 9 by 9-inch (22.86 by 22.86-centimeter) square baking pan. Lightly coat the bottom and sides of a 9 by 9-inch (22.86 by 22.86-centimeter) baking pan with cooking oil. Generously dust it with powdered sugar or cornstarch.
3
Dissolve the granulated sugar with the rest of the water. Pour the remaining ½ cup (120 milliliters) of water into a saucepan. Stir in the granulated sugar (not the powdered sugar). Clip a candy-making thermometer to the saucepan so that it's ready for the next step.^{[7]
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4
Add the gelatin, then bring the sugar water to 240°F (115°C). Stir the gelatin water into the sugar water. Bring the solution to a boil over medium heat. Let it cook until it reaches 240°F (115°C). Do not stir during this time.
5
Remove the saucepan from heat and add in the salt and vanilla extract. Once the sugar water reaches 240°F (115°C), take the saucepan off the stove and set it down onto a heat-safe surface. Stir in the salt and vanilla extract. If you don't like vanilla, you can leave it out or replace it with a different extract.^{[8]
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6
Beat the sugar water in an electric mixer until it doubles in volume. Pour the sugar water into the bowl of an electric mixer fitted with whisks. Beat it on a low-speed setting for 2 minutes, then beat it on high for 10 to 15 minutes. It's ready when it turns soft and twice its size.^{[9]
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7
Transfer the mixture to the prepared pan. Use a rubber spatula to help spread the mixture across the bottom of the pan, from corner-to-corner. If the marshmallow mixture is sticking to the spatula, lightly coat it with cooking oil first.
8
Allow the marshmallow mixture to set for 3 hours. Leave it uncovered someplace where it won't get disturbed. Once it finishes cooling, dust it with ½ cup (65 grams) of powdered sugar.
9
Cut the marshmallow mixture into 1-inch (2.54-centimeter) squares. Turn the marshmallow slab onto a cutting board. Use a pizza cutter or a sharp knife to cut it into 1-inch (2.54-centimeter) squares. If the marshmallows are too sticky, coat the blade with some cooking oil.
10
Dust the marshmallows with more powdered sugar before serving them. Pour some more powdered sugar into a rimmed baking sheet. Roll the marshmallows around in the powdered sugar, then dust off any excess sugar. This will help keep them from sticking to each other.^{[10]
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Method 3

Method 3 of 3:

Making Vegan Marshmallows

1
Dissolve the agar agar flakes in ½ cup (120 milliliters) of water. Pour ½ cup (120 milliliters) of water into a small saucepan. Add in 2 tablespoons (10 grams) of agar agar flakes. Set the saucepan aside. The flakes will absorb the water and gel up while you prepare the rest of the recipe.
2
Bring the sugar, rice flour, and water to a boil. Pour the granulated sugar into a saucepan. Stir in 2 tablespoons (20 grams) of sweet rice flour. Whisk in ½ cup (120 milliliters) of water. Bring the solution to a boil over medium heat.
3
Cook the sugar water for 5 minutes. As soon as the mixture starts to boil, reduce the heat to a gentle boil (low to medium-low). Allow the mixture to cook for 5 minutes. Stir it occasionally with a whisk so that lumps don't form. This will eventually be your syrup.^{[11]
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- Prepare the marshmallow base while the sugar water is cooking.
4
Combine the rest of the water and the next five ingredients in a mixer. Pour the soy isolate powder into an electric mixer fitted with a whisk. Add in the xanthan gum, guar gum, cream of tartar, and salt. Lastly, stir in the remaining ½ cup (120 milliliters) of water using a low-speed setting. This will be your marshmallow base.
- You can also use a food processor fitted with a whisk instead.
5
Beat the marshmallow base until it forms stiff peaks, about 5 minutes. Once everything is combined, turn the speed up to high, and continue mixing until the marshmallow base triples in volume and forms stiff peaks. Scrape the bottom and sides of the bowl often. This will take about 5 minutes.^{[12]
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- If you are using a food processor, you will need to pause it from time to time, and scrape down the sides of the bowl with a rubber spatula.
6
Bring the agar agar water to a boil over medium-low heat. Do this when the sugar water is almost done cooking. Stir the agar agar often to help the flakes dissolve.
7
Gradually beat the sugar water into marshmallow base. Turn your mixer on to a high-speed setting. While the mixer is running, pour the hot sugar water into the mixer, focusing on the sides of the bowl. Keep beating until you get thick ribbons. This will take about 4 to 5 minutes.^{[13]
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8
Beat in the vanilla extract. Pour the vanilla extract into the marshmallow base. If you don't like vanilla, you can leave it out entirely, or use a different type of extract, such as peppermint. Choose one that you think will taste good in marshmallows.
9
Gradually beat in the agar agar water. Do this while the mixer is still running at high speed. Keep beating the marshmallow base for another 1 to 2 minutes. Stop when the marshmallow base is thicker than before but still warm.^{[14]
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10
Prepare your baking pan. Grease the inside of an 8 by 8-inch (20.32 by 20.32-centimeter) square baking pan. Dust the bottom and sides of the pan generously with sweet rice flour. You can also use cornstarch and/or powdered sugar instead of the sweet rice flour.^{[15]
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11
Spread the mixture across the bottom of the baking pan. Use a rubber spatula to help spread the marshmallow base across the bottom of the pan, from corner-to-corner. If the marshmallow mixture is sticking to the spatula, lightly coat the spatula with cooking oil. Lightly dust the top of the marshmallows with more rice flour.
12
Let the marshmallow base set for 1 hour before cutting it. Once the base has set, it will be firm and somewhat springy. Turn the marshmallow base onto a cutting board. Use a sharp knife or pizza cutter to cut the marshmallow base into 1-inch (2.54-centimeter) squares.^{[16]
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13
Dust the marshmallows with more rice flour before serving them. Fill a rimmed baking sheet with more sweet rice flour. Roll the marshmallow cubes in the flour until they are coated; this will keep them from getting sticky. Dust off the excess flour, then store them in a sealed container in the fridge. They will last up to 1 week.
- You can use cornstarch and/or powdered sugar for this step.

Community Q&A

Question

Can I use marshmallows to ice cakes?

Community Answer

In a way, yes. You can use marshmallows to make fondant, which you can then use to cover your cake with.
Question

Is it necessary to use the candy thermometer?

Community Answer

Yes, it helps you know when the marshmallows are done.
Question

Can I use these marshmallows for making rice krispie treats?

Ollieoxenfree

Community Answer

Yes!