Ham, tomato & watercress tart
The secret to this tart is its cheesy, crisp polenta crust. Fabulous warm or cold and perfect for picnics
Place all the vegetables in a bowl, then toss well. Stir in the mayonnaise to coat the salad, then season with lots of black pepper and a little salt. Any leftovers can be stored in a sealed container in the fridge for up to two days.