Toast Cumin seeds in a dry fry-pan for a few minutes to release the flavor.
Toss Onions, Peppers and Mushrooms together, add toasted Cumin seeds, Cayenne, Paprika, Rosemary and Oregano.
In a large fry-pan heat Oil and add the mix to the pan. Stir-fry for 5-10 mins until the Vegetables are cooked.
Stir through Tomato Sauce and serve.