Transform your greens into a decadent centerpiece with this Creamy Baked Broccoli Gratin. While broccoli is often seen as a simple side, the secret to elevating it lies in the perfectly thickened Béchamel sauce and the strategic layering of sharp cheeses. By par-blanching the florets just enough to retain their vibrant color and ‘al dente’ snap, you prevent the dish from becoming watery during the baking process. The result is a harmonious blend of tender vegetables enveloped in a velvety, nutmeg-scented cream, topped with a shatteringly crisp, bubbly cheese crust. Whether you’re looking for a comforting holiday side dish or a clever way to make vegetables the star of the night, mastering this classic gratin technique ensures a restaurant-quality result that will have everyone asking for seconds.
Creamy Baked Broccoli Gratin
Equipment
- Baking Dish
- Pot
- Wok or non-stick frying pan
Ingredients
- 1 head of broccoli
- 1/4 onion (finely diced)
- 3 garlic cloves (minced)
White Sauce
- 600 g milk (use 500g if you prefer a thicker sauce)
- 50 g unsalted butter
- 50 g cake flour (or all-purpose flour)
- 1/2 tsp salt
- 1/4 tsp black pepper
- 1/8 tsp nutmeg (optional; not used in this recipe)
Instructions
- Prepare the ingredients. Finely chop 3 cloves of garlic and place them in a small bowl.
- Finely dice 1/4 of an onion and place it in a separate bowl. Set aside.
- Gently heat 600g of milk over low heat. Once it starts to simmer, turn off the heat. Warming the milk helps it mix more smoothly later.
- Once all ingredients are ready, start making the white sauce. In a saucepan over low heat, add 50g of unsalted butter and stir gently.
- When the butter has completely melted, add 50g of flour. Stir continuously until well combined. Let it bubble for a bit longer to remove the raw flour taste.
- Gradually pour in the warm milk, stirring constantly to blend everything evenly.
- When the mixture starts to boil again, season with 1/2 tsp of salt and 1/4 tsp of pepper. Stir well, then turn off the heat. The white sauce is ready — set it aside.
- Next, heat a little oil in a frying pan over medium heat. Add the minced garlic and onion, and sauté until fragrant.
- Add the broccoli florets and stir-fry evenly.
- Add 1/4 cup of water, cover with a lid, and let it steam for about 3 minutes.
- Remove the lid and pour in the white sauce. Stir well until the broccoli is evenly coated — your creamy broccoli mixture is ready.
- Transfer the mixture to a baking dish and top with cheese. Adjust the amount based on your preference.
- Air fry at 180°C (356°F) for 7 minutes.
- When done, carefully remove the baking dish — it will be hot! Serve and enjoy your delicious Creamy Baked Broccoli Gratin, perfect for sharing with family on cozy weekends.
Video
Cooking & Storage Tips
- Some recipes use cold milk directly, but it can cause lumps in the sauce. Gently warming the milk helps it blend smoothly with other ingredients.
- When cooking the butter and flour mixture, let it bubble for a few extra seconds before adding the milk. This step removes the raw flour taste and gives your white sauce a richer flavor.
- This white sauce recipe makes about two servings. Depending on the size of your broccoli, you can adjust the quantity — larger broccoli heads may only need one, while smaller ones might require two. You can also adjust the sauce’s thickness by adding more or less milk to suit your preference.
Tools & equipment you may need
Air Fryer
Au Gratin Baking Dishes
Last Updated on 2026-04-22