Decadent Cauliflower Cheese Pasta with Crispy Garlic Breadcrumbs and Leek Topping

If you love comfort food with a twist, this cauliflower cheese pasta with a crispy garlic bread crumb and leek topping will quickly become a favourite. Inspired by Jamie Oliver’s original creation, my version skips the nuts in the topping, making it a bit lighter but still packed with flavour. The combination of creamy cheese sauce, tender cauliflower, and crunchy garlic-leek crumble creates a dish that’s both satisfying and exciting and is a complete winner in our household, with the added benefit of sneaking a few more vegetables into my youngest's diet!

Why This Recipe Works

This cauliflower cheese pasta stands out because it combines creamy, cheesy comfort with fresh vegetables and a crunchy topping. The cauliflower adds subtle sweetness and nutrition, while the leek and garlic crumbs bring a savoury crunch that makes every bite interesting. The sauce is smooth and rich, coating the pasta perfectly without being too heavy.

This recipe is also flexible. You can swap the cheddar for other cheeses like Gruyère or mozzarella, or add herbs like thyme or parsley for extra aroma. It’s a great way to enjoy a classic comfort dish with a fresh, modern twist.

Cauliflower Cheese Pasta with Crispy Garlic Breadcrumbs and Leek Topping - The Recipe

• 300g dried pasta

• 1 small cauliflower, leaves removed and broken into florets

• 1 leek

• 40g (1½ oz) butter

• 40g (1½ oz) plain flour

• 600ml (20 fl oz) milk

• 250g (9 oz) cheddar, grated

• 100g stale sourdough bread

• A good pinch of garlic sea salt

• 2 cloves garlic, finely grated

• 1/2 tbsp olive oil

Method

Preparing the Crispy Garlic Leek Crumble

Start by preparing the leek and bread crumb topping, which adds a wonderful crunch and garlic aroma to the dish. Chop off the green end of the leek, reserving the white end for later, and slice it into long, thin ribbons. Set aside.

Next, tear the stale sourdough bread into pieces and place them in a food processor. Add the grated garlic and half a tablespoon of olive oil and the sea salt. Blitz until you get fine crumbs. Transfer these crumbs to a large non-stick frying pan along with the leek ribbons. Cook over medium heat for about 15 minutes, stirring occasionally, until the crumbs turn golden and crisp. Once done, set this crispy mixture aside in a bowl.

Cooking the Pasta and Vegetables

Prepare the cauliflower by breaking it into small florets and slice the white part of the leek into rings. Bring a large pot of salted water to a boil and add the cauliflower florets and leek rings. Let them cook until tender, about 5-7 minutes.

In a separate pot, cook the pasta according to the package instructions until al dente. Reserve a couple of ladles of the pasta cooking water before draining.

Making the Creamy Cheese Sauce

While the pasta and vegetables cook, melt the butter in a saucepan over medium heat. Add the plain flour and stir continuously to form a roux. Cook this mixture for a few minutes to remove the raw flour taste.

Gradually whisk in the milk, adding it in small amounts to avoid lumps. Keep stirring and cooking for 10 to 15 minutes until the sauce thickens and becomes smooth. Remove from heat and stir in the grated cheddar cheese until melted and creamy.

Bringing It All Together

Drain the cooked cauliflower and leeks and add them to the cheese sauce. Pour in two ladles of the reserved starchy pasta water to loosen the sauce slightly. Use a hand blender or food processor to blend the mixture until smooth and velvety.

Add the drained pasta to the cheese and cauliflower sauce, stirring gently to coat every piece. Transfer the pasta to a large serving platter.

Finally, sprinkle the crispy garlic and leek crumble generously over the top. This topping adds a delightful texture contrast and a burst of flavour that lifts the whole dish.

Tips for Success

• Use a sharp cheddar for a rich, tangy flavour that melts beautifully.

• If you prefer a nuttier topping, feel free to add chopped nuts to the bread crumbs before cooking.

• Reserve some pasta water to adjust the sauce consistency—it helps the sauce cling to the pasta better.

• For a gluten-free version, substitute the plain flour with a gluten-free alternative and use gluten-free pasta and bread.

• This dish pairs well with a simple green salad or steamed vegetables for a balanced meal.