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These are the kind of over-the-top treats you expect at a summer fair, but they are surprisingly easy to pull off in your own kitchen. The trick is freezing the marshmallows solid before they hit the oil, so the outside turns golden and crisp while the inside warms into a soft, gooey pillow.
I make these when I want something fast and dramatic for a crowd. From freezer to plate they take about ten minutes of actual work, and the reaction is always worth it. Just keep your oil at the right temperature and do not overcrowd the pot.
What goes into the batter
The batter here is a simple wet-dry mix that puffs into a light, crispy shell. Cornstarch keeps it shatteringly crisp, and a splash of vanilla adds a subtle sweetness that works with the marshmallow instead of fighting it. Use cold milk straight from the fridge; it slows gluten development so the coating stays tender rather than chewy.
- Large marshmallows. The base of the whole bite. Freeze them first so they hold their shape in the hot oil instead of melting instantly.
- All-purpose flour and cornstarch. Flour builds the batter body, and cornstarch lightens it into a crisp shell that cracks when you bite.
- Baking powder. Gives the batter a little lift so it balloons around the marshmallow instead of sagging.
- Cold whole milk and egg. The liquid team; cold milk keeps the batter tender, and the egg helps it cling.
- Vanilla extract. A small amount that rounds out the sweetness and makes the coating taste like a real dessert, not just fried dough.
- Graham cracker crumbs. Optional, but rolling the battered marshmallows in crumbs adds extra crunch and a hint of s'mores flavor.
- Vegetable oil. Neutral and high-smoke-point, perfect for deep frying without adding off flavors.
- Powdered sugar. The finishing dust that makes them look like a true carnival treat.
Frying them right
- Freeze the marshmallows. Arrange them in a single layer on a plate or small tray so they are not touching. Freeze for at least one hour, preferably two, until they feel hard all the way through. This is the step that prevents a melted mess.
- Make the batter. Whisk the flour, cornstarch, baking powder, and salt together in a medium bowl. In a separate bowl, beat the egg, cold milk, and vanilla. Pour the wet into the dry and stir until just combined; a few small lumps are fine.
- Heat the oil. Pour about two inches of oil into a heavy pot or Dutch oven and heat to 350°F (175°C). Use a candy thermometer clipped to the side so you know the temperature stays steady.
- Batter and coat. Working in batches of three or four, drop frozen marshmallows into the batter and turn them with a fork until evenly coated. For extra crunch, roll them in graham cracker crumbs immediately after battering.
- Fry until golden. Carefully lower the coated marshmallows into the hot oil. Fry for sixty to ninety seconds, turning once, until the crust is deep gold and crisp. They cook fast, so stay close.
- Drain and dust. Lift them out with a slotted spoon and set them on a wire rack or paper towels for a few seconds. Dust with powdered sugar while they are still warm, then serve immediately.
Why freezing matters
A room-temperature marshmallow will dissolve into the oil before the batter even has a chance to set. The freezer hardens the sugar and gelatin inside just enough to buy you sixty to ninety seconds of frying time. That short window is all the batter needs to crisp and seal the outside. If you skip the freeze, you will end up with hollow, oily shells and a pot of sticky sugar water.
The oil temperature sweet spot
Three hundred and fifty degrees Fahrenheit is the number to remember. Much lower and the batter soaks up grease instead of frying; much higher and the outside burns before the inside warms through. A candy thermometer is cheap insurance here. If the temperature drops after adding a batch, wait thirty seconds for it to recover before adding the next one. For more on safe frying practices, the U.S. FDA publishes useful guidance on safe food handling at home.
S'mores twist and other swaps
If you want a s'mores vibe, sandwich a small square of chocolate between two marshmallows before freezing them, then roll the battered parcels in graham cracker crumbs. The chocolate melts into a silky pool inside the crisp shell. You can also swap the vanilla in the batter for a pinch of cinnamon, or drizzle the finished batch with melted dark chocolate and caramel. For another crunchy dessert that plays with batter and fruit, try our deep-fried strawberry cheesecake pies. If you love the hot-and-cold contrast of fried desserts, fried ice cream delight uses the same freeze-first logic.
Serving and storage reality
These are at their absolute best roughly thirty seconds after the powdered sugar hits them. The contrast between the hot, crackly shell and the warm, soft center is the whole point. Leftovers can be refrigerated in an airtight container for up to one day, but the coating softens dramatically. Reheat them in a 400°F oven for five to six minutes to recrisp the outside. The microwave will turn them soggy.
Scaling for a party
This recipe doubles easily, but do not double the batch size in the pot. Fry three to four at a time no matter how many people are waiting. If you want a full dessert spread, set up a station with these, our deep fried sweetness, and a bowl of chocolate dipping sauce. Guests can grab and go while you keep the fryer moving.
FAQs
- Can I use mini marshmallows instead of large ones?
Yes, but reduce the fry time to about forty-five seconds and work in smaller batches so they do not clump together in the oil.
- What is the best oil for deep frying marshmallows?
Use a neutral oil with a high smoke point like vegetable, canola, or refined peanut oil. Avoid olive oil, which can add a savory note that clashes with the sweet batter.
- Why did my marshmallows melt and leak into the oil?
This usually happens when the oil is not hot enough or the marshmallows were not frozen solid. Both mistakes give the sugar time to liquefy before the batter crust has a chance to set and seal.
- Can I make these in an air fryer?
I do not recommend it. The wet batter drips through the basket slats before it cooks, which creates a mess and leaves you with no crisp shell.
- Can I stuff the marshmallows with chocolate before frying?
Yes. Sandwich a small square of chocolate between two marshmallows, freeze until solid, then batter and fry. The chocolate turns into a molten center inside the crisp shell.
- What dipping sauces work best?
Warm chocolate sauce, salted caramel, and raspberry coulis all cut the sweetness nicely. Even a small dish of peanut butter warmed with a little cream works well.
- How far ahead can I freeze the marshmallows?
Up to one week in an airtight bag. The longer they freeze, the harder they get, which actually makes frying easier and reduces leaks.
- Are there gluten-free options?
Replace the all-purpose flour with a 1-to-1 gluten-free baking blend and use gluten-free graham-style crumbs. The texture will be slightly different but still crisp and delicious.
