For those who prefer a vegetarian version of Rogan Josh, this recipe is perfect. Using a food processor, blend together onions, garlic, ginger, and spices to create a fragrant paste. Instead of lamb, this recipe uses a combination of vegetables like potatoes, carrots, and peas. The vegetables are cooked in the flavorful paste along with tomatoes and yogurt until they are tender and the flavors have developed. This vegetarian Rogan Josh is a hearty and delicious dish that can be enjoyed by everyone.