For the base

2 1/2 cups all-purpose flour
1 teaspoon instant yeast
1 teaspoon salt
2 tablespoons olive oil
1 cup warm water

For the topping

1 can (8 ounces) tomato sauce
300g grated parmesan
10 slices smoked ham
125g ball mozzarella, sliced
6-8 cherry tomatoes, halved
1 can sliced mushrooms, drained
1 green pepper, thinly sliced
1 tablespoon olive oil
½ cup fresh basil leaves

Put the flour into a large bowl. Add the yeast, salt, olive oil and warm water. Stir together with a wooden spoon until the dough turns soft and fairly wet. Turn onto a lightly floured surface and knead for 5 minutes until smooth. Roll out the dough into a large circular shape and place it onto a floured baking sheet. Preheat oven to 400°F / 200°C. Coat the dough with the tomato sauce. Scatter with parmesan cheese, then add ham, mozzarella, cherry tomatoes, mushrooms and peppers. Drizzle with olive oil and bake for 10-15 minutes until crisp. Serve warm with sprinkled basil leaves on top.