How to make:
Measure out a cup of marshmallows and tip into a bowl. In a separate bowl, measure out the icing sugar and corn flour and mix together.
Place the marshmallows in the microwave and melt for 30 seconds. If they are not totally melted pop them back in for another 10 seconds. Once melted, quickly give the marshmallows a stir and add the icing sugar and corn flour mixture a little at a time, stirring thoroughly. Keep adding it until the mixture becomes difficult to stir.
Check that the mixture has cooled down, then get your hands in and knead the mixture.
If you like you can add a few dots of food colouring and mix it into the slime with your hands. If the mixture starts to get sticky again add more of the corn flour/ icing sugar mix.
Add a teaspoon of oil and work it into the slime with your hands - this helps to reduce stickiness. If it is still sticky, add a little more.
Add sprinkles to the slime to finish. You can store your slime in a jar or have a play and eat it straight away!