Easy to make strawberry rhubarb bars, made up of a shortbread crust covered with a pistachio filling and juicy strawberries & rhubarb.
In a food processor, combine the flour, salt and sugar. Cut the butter into cubes and add to the flour mix and process for about 1 min, until it forms large clumps.
Pour the dough into the baking square and press down firmly until the base is even.
Bake for 15 minutes or until very pale golden.