This plant‑based French Onion Soup is a slow‑simmered, deeply comforting bowl that transforms simple pantry ingredients into something luxurious and nourishing. Long‑cooked brown onions melt into a naturally sweet, caramel‑rich base, lifted by garlic, thyme, and a touch of wholegrain mustard. Miso paste and balsamic vinegar add layers of umami and brightness, while a clear vegetable stock keeps the broth light yet full‑bodied. Finished with wedges of Wholegrain sourdough and a generous spoonful of your stretchy vegan mozzarella, it becomes a modern, wholesome twist on a timeless classic.
The health benefits begin with the onions themselves. When gently cooked, they release natural sugars and develop quercetin—a powerful antioxidant known for supporting heart health, reducing inflammation, and promoting balanced immunity. Onions also provide prebiotic fibres that help nourish beneficial gut bacteria, supporting digestion and long‑term metabolic wellbeing.
Garlic brings its own wellness boost, offering allicin and other sulphur compounds that support immune resilience and cardiovascular health. Fresh thyme and bay leaves contribute subtle herbal notes along with antioxidants that help protect cells from everyday oxidative stress.
Miso paste is the quiet hero of this recipe. Fermented and rich in natural probiotics, it supports gut health and may help improve digestion and nutrient absorption. Its savoury depth replaces the need for heavy dairy or meat‑based broths, keeping the soup light, plant‑forward, and easy on the system. A splash of balsamic vinegar adds acidity and polyphenols—plant compounds linked to improved circulation and reduced inflammation.
Wholegrain mustard adds gentle heat and a dose of selenium and magnesium, minerals essential for energy production and thyroid function. Vegetable stock and water keep the broth hydrating and low in fat, while still allowing the aromatics to shine.
Topping the soup with wedges of wholegrain sourdough and your homemade vegan mozzarella adds creamy richness without the saturated fats found in traditional cheese. Made from cashews, lemon, and tapioca, it brings plant protein, heart‑healthy fats, and minerals like magnesium and copper—turning each spoonful into a nourishing, satisfying experience.
Altogether, this French Onion Soup is a celebration of slow cooking, simple ingredients, and whole‑food nourishment. It’s the kind of dish that warms you from the inside out while supporting gut health, immunity, and everyday vitality.
French Onion Soup
Ingredients
- ½ cup vegetable stock (broth)
- 3 large brown onions sliced
- 3 cloves garlic minced
- 1 tsp wholegrain mustard
- 3 cups water
- 1 tbsp miso paste
- 2 tbsp balsamic vinegar
- 2 bay leaves
- 2 stalks fresh thyme
- ¼ tsp ground pepper
- homemade vegan mozzarella
- wholegrain sourdough
Instructions
- Using a large pot, saute the onion and garlic in the stock.
- Brown the onion on low heat for around 5 mins, scrapping the onion from the pan to caramelise, and add small amounts of water at a time. You want the onion dark brown without burning to create the traditional onion flavour.
- Add in the remaining ingredients. Cover and cook on low heat for around 15-20 minutes.
- Pour soup into small ramekin bowls, and top with a slice of sourdough and a dollop of mozzarella.
- Place on a tray in the oven and grill at 180°C for 6-8 minutes or until the tops have browned.
