marshmellow slice

hi can anyone tell me how to make the marshmellow for the top of the slice, l tried to make it but it didnt set, any info appreciated... .

Marshmellow Shortcake

125g butter softened,
1/2 c sugar,
1/2 tsp vanilla essence,
1 egg,
1 3/4 c plain flour,
1 tsp baking powder and
choc hail or coconut.

Topping;
2 tbsp gelatine,
1 c cold water,
1 c sugar,
1 egg white,
1 c icing sugar.

Cream butter and sugar then add essence.
Add egg then sifted flour and baking powder.
Mix until well combined.
Press into a 20 x 30cm sponge roll tin lined with baking paper and bake at 180'C for 30 minutes.
Spread topping on shortcake immediately.
Sprinkle with choc hail or coconut.

To make topping;
Soften gelatine in water, add sugar and boil for 8 minutes.
Cool.
Beat egg white until stiff and fold in icing sugar.
Slowly pour in cooked gelatine.
Beat until white and thick.

Variation or an alternative topping;
Soak 1 pkt lemon or raspberry Jelly crystals in 1 1/2 c cold water for 10 minutes and boil for exactly 8 minutes without stirring.
Leave until slighly cool.
Add 1 c icing sugar and beat until stiff.
Spread on shortcake mixture, sprinkle with coconut or ice or choc icing then sprinkle with chopped walnuts.

thank you so much...

you can makethejellytype aswell

This mallow recipe is really simple:
2T gelatine
2c sugar
1c boiling water
vanilla
food colouring of your choice

Dissolve gelatine in the water.
Add sugar, vanilla and colouring and beat until light and fluffy.
Awesome.

thanks again. .

The jelly one doesnt set... .

I made it following the same instructions (Edmonds illustrated cookbook) and mine didnt set.

Its best to use the gelatine...
Makes a perfect mallow everytime...

I even made just the mallow for the kids... they loved it.

cantunderstandhowyourjellymarsmellowdoesnotsetasisajellyjustadda1/2cupmoreoficing sugarwhenbeatingneveraproblemwith me