Preheat oven to 200C/400F/Gas 6 and oil a baking sheet.
Mix the flour, olive oil and water together in a bowl to make a soft dough.
On a clean flat surface, roll the dough out into a thin disc and lay onto the oiled baking sheet.
Spread the tomato puré over the dough disc.
Meanwhile, for the topping, heat the olive oil in a frying pan over a high heat. Add the mushrooms and sun-blushed tomato and fry for two minutes.
Spread the mushroom mixture over the pizza, crumble over the goats' cheese and transfer to the oven and cook for 6-8 minutes, until the cheese is melted and the base is crisp and golden.