How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Brussels Sprout And Cauliflower Gratin?

You need 10 ingredients. The key ingredients include: 1 lb Brussels sprouts, halved, 1/2 head cauliflower, cut into florets, 3 tbsp butter, 1 None small leek, finely sliced, and more.

Is Brussels Sprout And Cauliflower Gratin suitable as vegetarian?

Yes, Brussels Sprout And Cauliflower Gratin falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Brussels Sprout And Cauliflower Gratin?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Brussels Sprout And Cauliflower Gratin Recipe

Name: Brussels Sprout And Cauliflower Gratin
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 lb Brussels sprouts, halved; 1/2 head cauliflower, cut into florets; 3 tbsp butter; 1 None small leek, finely sliced; 1/2 tbsp all-purpose flour; 2 cups milk; 2 oz Parmesan cheese, grated; 1 None lemon, zested; 2/3 cup fresh breadcrumbs; None None fresh chives, snipped, to serve

Try this homemade Brussels Sprout And Cauliflower Gratin recipe the whole family will love. Made with Brussels, cauliflower, butter and flour. Easy step…

This Brussels Sprout And Cauliflower Gratin relies on simple, everyday ingredients such as brussels sprouts, halved, butter, all-purpose flour and milk. It comes together quickly and makes 4 servings, at about 309 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Vegetarian

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Brussels Sprout And Cauliflower Gratin

Tips for the best results

Variations & substitutions

My Personal Notes

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