Cauliflower–Fennel Gratin

Dairy‑Free Cauliflower–Fennel Gratin (Cozy, Modern, and Surprisingly Creamy)

If you love cozy comfort food but want something lighter and dairy‑free, this cauliflower–fennel gratin is the perfect fit. It delivers everything you expect from a classic gratin — bubbling edges, a golden top, and a creamy center — without using milk or cream. The secret is a simple broth‑based velouté that thickens beautifully and lets the vegetables shine.

Cauliflower brings natural creaminess, while fennel adds gentle sweetness and aroma. Together, they create a warm, modern side dish that works for weeknights, gatherings, or meal prep. The crispy panko topping gives you that essential gratin texture without weighing things down.

This recipe is naturally dairy‑free (with an optional sprinkle of parmesan if you prefer), budget‑friendly, and easy to customize. Add herbs like thyme or rosemary, fold in white beans for protein, or broil the top for extra crunch. It’s a versatile, cozy dish that fits beautifully into a nourishing, comfort‑forward kitchen.

Whether you’re cooking for yourself, your family, or your community, this cauliflower–fennel gratin brings warmth, aroma, and a little golden magic to the table.

Print Recipe

Prep Time 20

Cook Time 25

Course Main Course, Vegetarian

Cuisine Mediterranean

Servings 4

Ingredients

1 medium cauliflower cut into small florets
- 1 large fennel bulb thinly sliced (reserve fronds)
- 1 small onion thinly sliced (optional)
- 3 tbsp olive oil divided
- 2 tbsp flour
- 1 ¾ cups vegetable or chicken broth
- 2 tbsp nutritional yeast or ¼ cup parmesan optional
- 1 tsp Dijon mustard
- 1 tsp salt
- Black pepper
- Pinch of nutmeg
- ½ cup panko or breadcrumbs
- Extra olive oil for topping

Instructions

Heat oven to 400°F (205°C). Steam cauliflower for 5 minutes until just tender.
Sauté fennel (and onion if using) in 1 tbsp olive oil until soft and lightly golden.
In a saucepan, warm 2 tbsp olive oil. Whisk in flour and cook 1 minute. Slowly add broth, whisking until smooth and thickened. Stir in nutritional yeast or parmesan (optional), Dijon, salt, pepper, and nutmeg.
Combine cauliflower and fennel in a baking dish. Pour the sauce over and gently fold to coat.
Toss panko with a drizzle of olive oil and sprinkle over the top.
Bake 20–25 minutes until bubbling and golden. Rest 5–10 minutes before serving. Finish with chopped fennel fronds.
Optional Upgrades: Add thyme or rosemary, fold in white beans or chicken, or broil for extra crisp.

Keyword cauliflower, fennel