Preheat the oven to 190°C/gas mark 5. Line a 20cm square baking tin with baking parchment.
Gently heat the sunflower spread, sugar and marshmallows together in a saucepan, stirring until combined. Add the apricots, then bring to the boil and stir over a medium heat for 5 minutes.
Remove from the heat and add the oats. Mix well, then spoon into the tin. Smooth down firmly with an oiled spatula.
Bake for 15-20 minutes, until golden brown. Remove from the oven, allow to cool, then cut into bars to serve.