Raspberry Marshmallow Hearts Recipe
Introduction
Raspberry Marshmallow Hearts are a delightful homemade treat combining the tartness of fresh raspberries with the soft, fluffy texture of marshmallows. These sweet, fruity confections make a perfect gift or a special dessert for any occasion.

Ingredients
- 1 cup fresh raspberries
- 1 cup granulated sugar
- 1/2 cup light corn syrup
- 1/4 cup water
- 2 large egg whites
- 1 tablespoon gelatin powder
- 1 teaspoon vanilla extract
- Pinch of salt
- Powdered sugar (for dusting)
Instructions
- Prepare raspberry purée: Wash the raspberries thoroughly, then purée them until smooth. Pass the purée through a fine mesh strainer to remove the seeds and set aside.
- Make syrup: In a saucepan, combine the granulated sugar, light corn syrup, and water. Heat over medium heat, stirring gently until the sugar dissolves. Continue heating until the mixture boils and reaches 240°F (soft-ball stage) on a candy thermometer.
- Bloom gelatin: Sprinkle the gelatin powder over a small amount of cold water and let it sit for 5 minutes to bloom.
- Combine gelatin and syrup: Stir the bloomed gelatin into the hot syrup until completely dissolved. Then add the raspberry purée, vanilla extract, and a pinch of salt. Mix well.
- Whip egg whites: In a clean bowl, beat the egg whites with an electric mixer until stiff peaks form.
- Incorporate raspberry mixture: Gradually pour the warm raspberry syrup mixture into the whipped egg whites while continuing to whisk. Whip until the mixture is thick, fluffy, and well combined.
- Set marshmallow: Lightly grease an 8-inch square pan. Pour the marshmallow mixture into the pan and smooth the top with a spatula. Allow it to set at room temperature for at least 4 hours or until firm.
- Finish and shape: Dust the surface with powdered sugar. Carefully remove the set marshmallow from the pan, turn it onto a cutting board, and dust again with powdered sugar. Use a heart-shaped cutter to cut into marshmallow hearts.
Tips & Variations
- For a smoother texture, be sure to strain the raspberry purée thoroughly to remove all seeds before adding it to the syrup.
- If fresh raspberries are unavailable, use frozen raspberries that have been thawed and drained to reduce excess moisture.
- To add a chocolate twist, melt some white or dark chocolate and drizzle over the cooled marshmallow hearts before cutting.
- Make sure your bowl and beaters are completely clean and dry before whipping egg whites for best results.
Storage
Store the raspberry marshmallow hearts in an airtight container at room temperature. They will keep well for up to one week. To refresh their texture if they become slightly sticky, dust them with a little more powdered sugar before serving. Avoid refrigeration, as it can cause marshmallows to become tough or sticky.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use agar agar instead of gelatin?
Agar agar can be used as a vegetarian substitute, but it behaves differently. You’ll need to adjust the amount and method, so it may take some experimentation to get the right marshmallow texture.
Is it safe to use raw egg whites in marshmallows?
Raw egg whites are commonly used in marshmallow recipes and are generally safe when whipped with hot sugar syrup, which cooks the egg whites. However, if you have concerns, you can use pasteurized egg whites available in stores.
PrintRaspberry Marshmallow Hearts Recipe
Raspberry Marshmallow Hearts are a delightful homemade treat featuring a smooth, fruity raspberry puree blended into fluffy marshmallows. These sweet, colorful confections are lightly dusted with powdered sugar and cut into charming heart shapes, perfect for gifting or special occasions.
- Prep Time: 20 minutes
- Cook Time: 10 minutes
- Total Time: 4 hours 30 minutes
- Yield: About 24 marshmallow hearts 1x
- Category: Confectionery
- Method: Stovetop
- Cuisine: American
Ingredients
Fruit Purée
- 1 cup fresh raspberries
Sugar Syrup
- 1 cup granulated sugar
- 1/2 cup light corn syrup
- 1/4 cup water
Marshmallow Base
- 2 large egg whites
- 1 tablespoon gelatin powder
- 1 teaspoon vanilla extract
- Pinch of salt
Finishing
- Powdered sugar (for dusting)
Instructions
- Prepare raspberry purée: Wash the fresh raspberries thoroughly. Purée them in a blender or food processor until smooth, then strain the mixture with a fine mesh sieve to remove seeds, creating a smooth raspberry purée.
- Make syrup: In a medium-sized pot, combine granulated sugar, light corn syrup, and water. Heat over medium heat, stirring occasionally until the sugar dissolves. Continue heating until the syrup reaches 240°F (115°C) on a candy thermometer, indicating the soft-ball stage.
- Bloom gelatin: Place the gelatin powder into a small bowl with some cold water and allow it to bloom for about 5 minutes, until it softens and swells.
- Combine gelatin and syrup: Stir the bloomed gelatin into the hot sugar syrup until fully dissolved. Then add the raspberry purée, vanilla extract, and a pinch of salt into the mixture, stirring to combine evenly.
- Whip egg whites: Using an electric mixer, beat the egg whites until stiff peaks form. This will incorporate air and provide a fluffy texture to the marshmallows.
- Mix raspberry syrup with egg whites: Gradually add the warm raspberry-gelatin mixture to the whipped egg whites while continuously whisking. Continue beating the mixture until it becomes thick, glossy, and holds its shape.
- Set marshmallow: Grease an 8-inch square pan with a thin layer of oil or non-stick spray. Pour the marshmallow mixture evenly into the pan and smooth the top with a spatula. Let it set uncovered at room temperature for at least 4 hours to firm up.
- Finish and shape: Once set, dust the surface generously with powdered sugar to prevent sticking. Carefully invert the marshmallow slab onto a cutting board, peel off any lining, and use a heart-shaped cookie cutter to cut the marshmallows into heart shapes. Dust edges with more powdered sugar if needed.
Notes
- For seed-free purée, ensure thorough straining. If desired, strain twice.
- Make sure the syrup reaches 240°F to set marshmallows properly.
- Blooming gelatin is crucial for proper texture and stability.
- Use pasteurized or fresh eggs with caution if serving to vulnerable groups.
- Store marshmallow hearts in an airtight container at room temperature for up to one week.
Keywords: raspberry marshmallows, marshmallow hearts, homemade marshmallows, raspberry treats, Valentine’s Day dessert

