I use supermarket own brand as well.
300 g soft cheese
3 tablespoons of caster sugar
600 ml of double cream
Half a bottle of toffee sauce.
Can also use puréed strawberries instead of toffee sauce.
Tastes fab.
Get a sweet pastry case from supermarket, add a tub or two of mascapone straight from the tub, place fruit of your choice all over the top...tinned peaches are great. Drizzle some honey over the top then rough grate some chocolate all over.