mushroom onion soup recipe | Indian style onion mushroom soup | healthy kumbh soup | with 27 amazing images. mushroom onion soup is vegan, gluten free soup without any thickening added in it, making it healthier. Learn how to make mushroom onion soup recipe | Indian style onion mushroom soup | healthy kumbh soup | mushroom onion soup is a hearty and flavorful soup made with garlic, onions, mushrooms, and broth. It is typically served with a topping of croutons or along with garlic bread, and is often considered a comfort food. This Indian style onion mushroom soup uses very few ingredients and gets ready in a jiffy, making it the perfect choice to enjoy for dinners, during winters or monsoons. pro tips to make mushroom onion soup: 1. Adding vegetable stock to the soup gives a richer taste and flavour. 2. Instead of whole wheat flour you can add oats flour slurry to thicken the soup. 3. Click the link to learn how to make basic vegetable stock at home. Enjoy mushroom onion soup recipe | Indian style onion mushroom soup | healthy kumbh soup | with detailed step by step photos.