Raspberry Marshmallow Slice
A pillowy soft raspberry marshmallow sits atop a crunchy biscuit base, to make the perfect sweet treat for gifting.
How long will it take?
Takes 1 hour plus setting time
What’s the serving size?
Makes 12 pieces
What do I need?
For the biscuit base
- 65 g caster sugar
- 195 g plain flour
- 1 tsp cocoa powder
- 2/3 cup desiccated coconut
- 170 g unsalted butter, melted
For the topping
- 2 egg whites
- 1 ¼ cups water
- 5 tsp powdered gelatine
- 400 g caster sugar
- 4 tsp liquid glucose
- 1 tsp vanilla extract
- 2 tbsp raspberry jam, strained
- Handful of freeze-dried raspberries
How do I make it?
- Preheat oven to 180C. Line a 20 x 20 x 5 centimetre baking tray with baking paper.
- Make the biscuit base by combining flour, cocoa powder, caster sugar and coconut together in a bowl. Add melted butter and stir to combine.
- Press mixture into the base of the baking tray and cook for 30 minutes. Remove from oven and set aside to cool.
- Make the marshmallow by whisking egg whites in a stand mixer until soft peaks form.
- Put half a cup of water into a small bowl and add powdered gelatine. Stir and set aside.
- Add sugar, glucose and remaining water to a heavy based saucepan, but do not stir. Bring mixture to a boil over medium-high heat. Use a sugar thermometer to measure the temperature; when it reaches 130C, remove from heat.
- Microwave gelatine mixture for 20 seconds on high. Remove, stir and add to sugar syrup, stirring to incorporate it. Take care as the mixture may splatter.
- Turn stand mixer onto a low-medium speed and slowly add the sugar syrup in a steady stream until it is all incorporated. Increase speed to high and beat for 10 minutes or until it has doubled in volume. Gently fold in raspberry jam.
- Brush the inside of the baking tin with a little butter or coconut oil to stop the marshmallow sticking. Spread marshmallow mixture evenly over the biscuit base. Sprinkle with freeze-dried raspberries. Leave to cool completely, then cut into slices with a greased knife and store in an airtight container.
