Café-Style Thick Sugar-Free Marshmallows (4 Ingredients)
The secret to those towering, ultra-fluffy marshmallows you see melting over fancy coffee shop lattes? A loaf pan. This 4-ingredient, sugar-free version uses allulose to recreate that bouncy, stretch-and-melt magic with a concentrated vanilla flavor that stands up perfectly to hot beverages.
- Total Time4 hours 30 minutes
- Yield18 cubes (serves 18) 1x
- DietSugar Free
Ingredients
Scale
Marshmallow Base & Coating
- 1 cup (240ml) cold water, divided
- 3 tablespoons (21g) unflavored gelatin powder
- 1 ⅓ cups (200g) powdered allulose, divided
- 1 tablespoon (15ml) pure vanilla extract
Instructions
- Prepare the pan: Line a 9×5-inch loaf pan with parchment paper, leaving enough overhang on the sides to lift the marshmallows out later. Use a small sieve to lightly dust the bottom and sides of the parchment with about 1 tablespoon of the powdered allulose.
- Bloom the gelatin: Pour ½ cup of the cold water into the bowl of a stand mixer fitted with the whisk attachment. Sprinkle the gelatin powder evenly over the water. Let it sit for 10 minutes to soften and bloom.
- Boil the syrup: In a medium saucepan, combine the remaining ½ cup of water with 1 cup of the powdered allulose (reserve the rest for dusting). Place over medium-high heat and bring to a rolling boil. Let it boil vigorously until a candy thermometer reads 235°F–240°F (about 2 to 3 minutes). Remove from heat immediately.
- Whip to stiff peaks: Turn the stand mixer on low speed to break up the bloomed gelatin. Carefully and slowly pour the hot allulose syrup down the side of the mixer bowl into the gelatin. Once all the syrup is added, pour in the vanilla extract. Gradually increase the speed to high and whip for 10 to 12 minutes. The mixture will triple in volume, turning glossy, bright white, and forming stiff, sticky peaks.
- Set the marshmallows: Working very quickly (the fluff begins setting up as it cools), use a slightly wet silicone spatula to scrape the mixture into the prepared loaf pan. Smooth the top as best as you can. Leave uncovered at room temperature to cure for at least 4 hours, or overnight. Do not refrigerate, as the fridge will cause the gelatin to weep condensation.
- Dust and slice: Sift half of the remaining powdered allulose over a large cutting board. Lift the cured marshmallow slab out of the pan using the parchment overhang and flip it onto the dusted board. Sift the remaining allulose over the top. Using a sharp, slightly wet knife, cut into 18 thick cubes, tossing each piece in the excess powder on the board so no sticky edges remain.
Notes
- Why it works: Allulose behaves remarkably like traditional sugar in candy making—it creates a stable, flexible syrup that whips into a glorious foam, unlike erythritol which often crystallizes and turns gritty as it cools.
- Pan sizing: Setting these in a 9×5-inch loaf pan creates the trendy, extra-thick café-style cubes. If you prefer standard thinner marshmallows, scrape the fluff into an 8×8-inch baking dish and cut them into smaller squares.
Nutrition (per serving — estimates)
Calories: 8 | Total Carbs: 11g (Fiber: 0g, Sugar: 0g, Allulose: 11g) | Fat: 0g (Saturated: 0g) | Protein: 1g
Net Carbs: 0g (calculated by subtracting allulose from total carbs)
Nutritional values are approximate, based on standard reference data (USDA FoodData Central). Actual values vary by brand and exact measurements. For precision, use a tracker like MyFitnessPal or Cronometer.
- Prep Time: 15 minutes
- Resting Time: 4 hours
- Cook Time: 15 minutes
- Category: Dessert
- Method: Stovetop / No-Bake
- Cuisine: American
Nutrition
- Serving Size: 1 thick cube
- Calories: 8
- Sugar: 0g
- Fat: 0g
- Saturated Fat: 0g
- Carbohydrates: 11g
- Fiber: 0g
- Protein: 1g