How to Make Homemade Marshmallow Fluff - Gemma's Bold Baking Basics Ep. 4
How to Make Homemade Marshmallow Fluff - Gemma's Bold Baking Basics Ep. 4 is a easy American recipe that serves 8. 100 calories per serving. Recipe by Bigger Bolder Baking with Gemma Stafford on YouTube.
Prep: 10 min | Cook: 25 min | Total: 45 min
Cost: $1.80 total, $0.23 per serving
Ingredients
- 1 cup Water (room temperature)
- 2.5 cups Granulated Sugar (fine white sugar)
- 0.5 cup Light Corn Syrup (golden or clear corn syrup)
- 3 large Egg Whites (room temperature, separated from yolks)
- 0.25 teaspoon Cream of Tartar (helps stabilize egg whites)
- 1 teaspoon Vanilla Extract (pure vanilla extract)
Instructions
Combine Water, Sugar and Corn Syrup
Place a heavy‑bottom saucepan over low heat. Add the water, granulated sugar and light corn syrup. Stir gently until the sugar is completely dissolved and the mixture is clear.
Time: PT5M
Heat to Soft‑Ball Stage
Increase the heat to medium‑high and attach the candy thermometer to the side of the pan. Bring the mixture to a gentle, steady simmer (small bubbles) and watch the temperature. When it reaches 240 °F (115 °C) – the soft‑ball stage – remove the pan from the heat.
Time: PT7M
Temperature: 240°F
Whip Egg Whites to Soft Peaks
While the syrup is heating, place the room‑temperature egg whites in a clean mixing bowl. Add the cream of tartar. Using a stand mixer on medium‑high speed, whip until soft peaks form, about 3–4 minutes.
Time: PT4M
Incorporate Hot Syrup
With the mixer on low speed, slowly drizzle the hot syrup into the egg whites in a thin, steady stream. Once all syrup is added, increase the mixer to medium‑high speed.
Time: PT2M
Beat to Thick, Glossy Marshmallow Fluff
Continue beating on medium‑high speed for 7–8 minutes, or until the mixture becomes thick, glossy and holds its shape. It will look drier than a typical meringue and will bloom slightly.
Time: PT8M
Add Vanilla Extract
Add the vanilla extract and give the mixer a quick burst on high speed for about 30 seconds to fully incorporate.
Time: PT1M
Transfer and Store
Spoon the marshmallow fluff into an airtight container. Let it cool to room temperature before sealing.
Time: PT2M
Nutrition Facts
- Calories
- 100
- Protein
- 1 g
- Carbohydrates
- 25 g
- Fat
- 0 g
- Fiber
- 0 g
Dietary info: Vegetarian, Gluten‑Free
Allergens: Eggs, Corn (corn syrup)
Ingredient Substitutions
- Instead of Granulated Sugar: Superfine sugar
- Instead of Light Corn Syrup: Golden syrup, maple syrup (will affect flavor)
- Instead of Egg Whites: Pasteurized egg whites in a carton
- Instead of Cream of Tartar: Lemon juice (half the amount)
- Instead of Vanilla Extract: Vanilla bean paste, almond extract (use half)
Equipment Needed
- Heavy‑Bottom Saucepan
- Candy Thermometer
- Stand Mixer
- Mixing Bowl
- Whisk Attachment
- Spatula (optional)
- Measuring Cups
- Measuring Spoons
Critical Steps — Do Not Skip
- Do not stir the syrup once it reaches a simmer; stirring can cause crystallization.
- Use a candy thermometer and stop heating at the soft‑ball stage (240 °F).
- Drizzle the hot syrup slowly into the whipped egg whites while the mixer is on low speed.
Chef Tips from the Video
- For an even smoother texture, sift the sugar before adding it to the water.
- A pinch of salt can enhance flavor without making the fluff salty.
- If you prefer a lighter color, use clear corn syrup; golden corn syrup adds a deeper amber hue.
Troubleshooting
The mixture is grainy or crystallized.
Make sure you did not stir after the syrup began to simmer and that you reached the correct temperature. If crystallization occurs, start over with fresh ingredients.
The fluff is runny and does not thicken.
Check that the syrup reached the soft‑ball stage (240 °F). If it was under‑cooked, gently re‑heat the syrup to the correct temperature and re‑whip.
Egg whites did not form peaks.
Ensure egg whites are at room temperature, the bowl and beaters are completely clean, and cream of tartar is added. Start mixing on medium speed before increasing.
Storage
Refrigerator: Store in a sealed container for up to 2 weeks.
Freezer: Can be frozen for up to 2 months; thaw in the refrigerator and re‑whip briefly.
Room temperature: Not recommended; the fluff may spoil after a few hours.
Make-Ahead Tips
- The fluff can be made a day ahead; keep it refrigerated and give it a quick stir before using.
- If the fluff becomes too stiff after refrigeration, beat it on low speed for 30 seconds to loosen.
Frequently Asked Questions
What is the cultural significance and history of marshmallow fluff in American cuisine?
Marshmallow fluff, also known as marshmallow creme, was invented in the United States in the early 20th century as a shelf‑stable alternative to fresh marshmallows. It became popular in school cafeterias and as a key ingredient in classic American treats like Fluffernutter sandwiches.
What are the traditional regional variations of marshmallow fluff in the United States?
While the basic recipe is consistent nationwide, some regions add a touch of corn syrup for extra shine, others use a pinch of salt or a dash of almond extract for flavor nuance. In the Northeast, marshmallow fluff is famously paired with peanut butter in the Fluffernutter sandwich.
How is homemade marshmallow fluff traditionally served in American households?
It is most often spread on toast, used as a filling for sandwich cookies, swirled into frosting, or mixed into milkshakes. It also appears as a topping for desserts like banana splits and ice cream sundaes.
What occasions or celebrations is marshmallow fluff traditionally associated with in American culture?
Marshmallow fluff is a staple at school lunchrooms, birthday parties, and casual family gatherings. It’s especially popular during summer picnics and as a nostalgic treat for children’s birthday cakes.
What other American dishes pair well with marshmallow fluff?
Marshmallow fluff pairs beautifully with peanut butter in Fluffernutter sandwiches, with chocolate ganache in dessert truffles, and as a swirl in fudge brownies or cookie dough.
What makes homemade marshmallow fluff special compared to store‑bought versions?
Homemade fluff has a fresher, lighter texture, no artificial preservatives, and you can control the sweetness and flavor. It also avoids the high‑fructose corn syrup often found in commercial brands.
What are the most common mistakes to avoid when making homemade marshmallow fluff?
Common errors include stirring the syrup after it starts simmering, not reaching the soft‑ball stage, adding the hot syrup too quickly, and using cold egg whites. Each of these can cause graininess or a runny final product.
Why does this marshmallow fluff recipe use cream of tartar instead of lemon juice?
Cream of tartar stabilizes the egg whites and helps achieve a glossy, firm texture without adding extra liquid. Lemon juice can work but requires a larger amount and may slightly alter the flavor.
Can I make homemade marshmallow fluff ahead of time and how should I store it?
Yes, store the finished fluff in an airtight container in the refrigerator for up to two weeks. For longer storage, freeze it for up to two months and re‑whip briefly after thawing.
What texture and appearance should I look for when the marshmallow fluff is done?
The fluff should be thick, glossy, and hold a ribbon when the beaters are lifted. It will look slightly drier than a meringue and have a smooth, marshmallow‑like interior.
How do I know when the sugar syrup has reached the correct stage for marshmallow fluff?
Use a candy thermometer; the syrup is ready at the soft‑ball stage, 240 °F (115 °C). The mixture will bubble gently and feel thick when you stir a small amount between your fingers (once cooled).
What does the YouTube channel Bigger Bolder Baking with Gemma Stafford specialize in?
Bigger Bolder Baking with Gemma Stafford focuses on bold, indulgent baked goods and classic American desserts, offering step‑by‑step tutorials that emphasize technique, flavor, and confidence for home bakers.
How does the YouTube channel Bigger Bolder Baking with Gemma Stafford's approach to American baking differ from other cooking channels?
Gemma blends professional pastry techniques with approachable explanations, often adding bold flavor twists and clear visual cues, whereas many channels stick to either basic home cooking or advanced pastry arts without the same balance of boldness and accessibility.
Last updated: September 3, 2026
