Preheat oven to 425°. Pour oil into a 9x13 inch roasting dish. Add cut up potatoes, garlic, zucchini, onions, carrots and bell pepper. Season with rosemary, salt and pepper. Cover loosely with foil. Roast for 30 minutes. Uncover, stir vegetables and add raisins. Roast uncovered for another 5 minutes. Remove pan from oven. Stir in cooked quinoa. Serve hot.