Pre heat oven 200c/ 180c fan/ Gas 6. Place the shallots in a frying pan, add the olive oil and cook gently until softened and beginning to brown, approx 10-15 mins, cool a little.
Spread the pizza base with the mascarpone cheese, top with the shallots, cherry tomatoes and the grated cheese.
Cook for 10-15 minutes until golden and melting, serve straight from the oven sprinkled with rocket.