Heat the oven to 200C/180C fan/gas 6. Mix the dry ingredients together in a small bowl, add the oil and 170ml water then stir until it forms a ball. If stiff, add more water, it should be soft but not sticky.
Knead on a floured surface for 3-4 mins. Roll into 2 balls, then flatten out. Add toppings and bake each on a baking sheet for 15 mins.