Gluten Free Whole30 French Onion Soup with Cauliflower Toasts

Total time1 hr 35 min

Prep time20 min

Cook time1 hr 15 min

Gluten Free Whole30 French Onion Soup with Cauliflower Toasts

Deeply caramelized onions—cooked low and slow until they're mahogany-brown and jammy—form the soul of this soup, built on a rich beef bone broth base with a savory depth from coconut aminos. Instead of a baguette float, thick roasted cauliflower steaks stand in as the "toast," turning golden and tender in the oven before getting bubbled right into the soup itself for that classic melty-top effect. A splash of apple cider vinegar brightens the broth, while fresh thyme and bay leaves keep the flavor rounded and savory throughout the long simmer. Each bowl gets finished under heat so the edges bubble and the cauliflower toast soaks up all that oniony broth, then a scatter of fresh parsley for a clean, herby finish. It's a cozy, deeply savory soup that fits neatly into a gluten free spread without sacrificing any of the classic French onion experience.

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Ingredients

4 servings

For the cauliflower toasts

1 large head cauliflower (about 2 lb), cut into 4 thick steaks (about ¾ inch each)
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2 tbsp olive oil
½ tsp salt
¼ tsp black pepper

For the soup

3 tbsp ghee
3 lb yellow onions (about 5 medium), halved and thinly sliced
1 tsp salt, plus more to taste
½ tsp black pepper, plus more to taste
4 sprigs fresh thyme
2 bay leaves
2 tbsp apple cider vinegar
6 cups beef bone broth
1 tbsp coconut aminos

For serving

2 tbsp fresh flat-leaf parsley, roughly chopped (optional)

Instructions

1
Preheat the oven to 425°F (220°C). Arrange the cauliflower steaks on a rimmed baking sheet in a single layer. Brush both sides with the 2 tbsp olive oil and season with 1/2 tsp salt and 1/4 tsp black pepper.
2
Roast the cauliflower steaks for 20 minutes, then flip carefully with a wide spatula and roast for another 15–20 minutes, until deep golden-brown on both sides and tender when pierced with a knife. Remove from the oven and set aside. Reduce the oven temperature to 375°F (190°C).

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