Candy thermometer This is essential for reaching the correct sugar temperature (240°F for the “soft ball” stage). No shortcuts here—accuracy is key.
Stand Mixer with Whisk Attachment A stand mixer is the easiest way to whip the mixture into marshmallow perfection. A powerful hand mixer can also work, but it may take longer.
8x8-inch baking pan Ideal for square marshmallows. Line it with parchment paper and dust it well to avoid sticking.
Silicone spatula To scrape every last bit of marshmallow from the bowl.
Fine-mesh sieve For evenly dusting the powdered sugar and starch mixture.
Ingredients
Dry Ingredients
1cuporganic cane sugar
1cuplight corn syrupor brown rice syrup for a more wholesome option
1/4teaspoonsea salt
1/2cuporganic powdered sugarfor dusting
1/2cuparrowroot starchcan substitute with cornstarch
2teaspoonsorganic peppermint extractadjust to taste
Wet Ingredients
3/4cupfiltered waterdivided
1tablespoonagar agar powdercrucial for a gelatin free marshmallow texture
1teaspoonvanilla extract
Optional
Natural red food coloring or beet juicefor a swirl effect
Crushed vegan peppermint candiesfor topping or rolling the sides
Instructions
Prepare the Pan
Line your 8x8 pan with parchment paper, making sure it goes up the sides. Lightly oil it, then dust generously with a mixture of half powdered sugar and half starch. Set aside.
Bloom the Agar
In a small saucepan, combine 1/2 cup water with the agar agar powder. Let it bloom for 5 minutes.
Boil the Sugar Syrup
While the agar blooms, add the sugar, corn syrup, salt, and remaining 1/4 cup water to a medium saucepan. Heat over medium, stirring just until combined. Once it starts to boil, stop stirring and insert your candy thermometer. Let it cook until it reaches 240°F.
Activate the Agar
While the sugar is boiling, bring the agar mixture to a simmer over medium heat. Stir continuously for about 3–4 minutes until the agar is fully dissolved and the mixture thickens slightly. Turn off heat.
Combine and Whip
Add the hot sugar syrup and thickened agar mixture to the bowl of your stand mixer. Begin whipping on low, gradually increasing to high speed. Add peppermint and vanilla extract. Continue whipping for 10–12 minutes until the mixture turns glossy, thick, and forms soft peaks.
Add Color (Optional)
For that classic peppermint swirl, add a few drops of red food coloring and fold in with a spatula—just a few strokes to create a marbled look.
Pour and Set
Quickly pour the mixture into your prepared pan and smooth out the top. Tap the pan lightly to release air bubbles. Dust the top with more starch-sugar mix and let it sit uncovered at room temperature for 2 hours to fully set.
Cut and Store
Once set, remove from the pan and slice into squares using a sharp knife dusted with powdered sugar. Toss the marshmallows in more of the starch-sugar mix to prevent sticking. Store in an airtight container for up to 5 days.