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Butternut Squash Mac and Cheese

January 20, 2023 (Last Updated: September 12, 2023) by Chris Collins

This roasted butternut squash mac and cheese is loaded with so much flavour and couldn’t be more simple to make!

If you’ve never added butternut squash to your mac and cheese before, you’re missing out. It adds a gorgeously sweet background flavour which balances out the cheese so beautifully. Once blended, it also helps create a thick and silky sauce. Sound good? Follow me…

close up shot of butternut squash mac and cheese in pot with wooden spoon digging in

Roasted Butternut Squash

Now, you could boil the squash, but I much prefer roasting it. It takes a little more time/effort, but it’s truly worth it.

Why roast the butternut squash?

Roasting the squash will also caramelize it, which adds heaps more flavour than simply boiling it. Plus, whilst it does take more time to cook, you don’t need to peel and dice the squash (which is never a fun process).

Roasted Garlic

Since we’re roasting the squash, it only makes sense to roast some garlic alongside, since they take the same time to roast. Plus, those dents in the squash are way too perfect not to place some garlic in. Roasting the garlic will sweeten up the flavour and take the harsh bite out of it. Plus it’ll completely soften, which makes it perfect to blend through this mac and cheese.

Process shots: slice off stalk (photo 1), slice in half (photos 2&3), gut out seeds and coat in oil, salt and pepper (photo 4), add in garlic (photo 5), roast (photo 6).

6 step by step photos showing how to roast butternut squash

Butternut Squash Sauce

Once the squash is super tender, it’s time to blend it up into a sauce. I use a food processor which has a blending option. You want something high-powered to really blitz the squash and turn it silky smooth.

With the roasted squash and garlic, we’re going to create the base of the sauce using:

  • Milk – I recommend using whole milk (much creamier). The squash will already be naturally creamy once blended, but some milk certainly helps things along 😛
  • Chicken Stock – This thins out the squash to create the sauce. It also adds a baseline flavour too.

Process shots: scoop out squash and squeeze out garlic (photo 1), add to blender (photo 2), add stock and milk (photo 3), blitz until very smooth (photo 4).

4 step by step photos showing how to make butternut squash sauce

Butternut Squash Mac and Cheese

Once you’ve blended the sauce, it’s time to crack on with the mac and cheese.

The power of Bacon

I HIGHLY recommend adding bacon to this recipe. Not only does it add some crispy texture, but the saltiness also helps balance out the sweetness of the squash. I typically fry it then remove from the pan and add it in at the end; just to help it stay crisp. However you can just leave it in the pot if you’d prefer.

What Cheese should I use?

I use a base of Cheddar, alongside some Gouda too. Gruyere also works nicely as a secondary cheese.

Extra Seasoning

To give this mac and cheese a little extra ‘umph’ we’re going in with some dijon mustard, which helps enhance those yummy cheesy tones. I also love adding in some smoked paprika to highlight the light charring out the squash, alongside some cayenne pepper to balance everything out with a kick of spice.

Starchy Pasta Water

The sauce will be pretty thick once you melt the cheese through it. As such, you’ll want to stir in some of the leftover pasta water to thin it out. The starch will also help emulsify the fats and bind everything together to help create a smooth and creamy sauce.

Process shots: add bacon to pot (photo 1), fry then remove (photo 2), pour in sauce (photo 3), stir in cheese (photo 4), stir in seasoning (photo 5), stir in pasta, bacon and pasta water (photo 6).

6 step by step photos showing how to make butternut squash mac and cheese

Serving Butternut Squash Mac and Cheese

You’ll want to check for seasoning/spice and adjust before serving up. You can also continue stirring through the pasta water a splash at a time to thin it out if needed. Plate up right away, as the sauce thickens pretty quickly!

For more delicious butternut squash pasta recipes check out my Brown Butter Butternut Squash Pasta, Roasted Garlic Pumpkin Alfredo and Creamy Butternut Squash Pasta!

For more stovetop mac and cheese recipes check out my Creamy One Pot Mac and Cheese and French Onion Mac and Cheese

Alrighty, let’s tuck into the full recipe for this butternut squash mac and cheese shall we?!

close up shot of butternut squash mac and cheese in small white bowl

How to make Butternut Squash Mac and Cheese (Full Recipe & Video)

close up shot of butternut squash mac and cheese in pot with wooden spoon digging in

Butternut Squash Mac and Cheese

This roasted butternut squash mac and cheese is loaded with so much flavour and couldn't be more simple to make!
5 from 1 vote
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Servings (click & slide): 5
Course: Dinner / Main Course
Cuisine: American / Western
Prep Time: 20 minutes
Cook Time: 1 hour
Total Time: 1 hour 20 minutes
Calories per serving: 902kcal
Cost per serving: £2.50 / $3

Equipment:

  • Large Pot & Wooden Spoon (for mac and cheese)
  • Baking Tray (for roasting squash)
  • Large Pot & Colander (for boiling macaroni)
  • Food Processor/Blender (for blending sauce)
  • Sharp Knife & Chopping Board
  • Cheese Grater

Ingredients (check list):

  • 1lb / 500g uncooked Macaroni
  • 1x 2lb/1kg whole Butternut Squash
  • 2.5 cups / 250g freshly grated Cheddar
  • 1 cup / 100g freshly grated Gouda
  • 1/2 cup / 120ml Milk (preferably whole milk)
  • 1/2 cup / 120ml Chicken Stock
  • 6 - 8 slices Streaky Bacon, diced
  • 1 small bulb of Garlic, halved through the centre to expose the cloves (see notes)
  • 1 tsp Dijon Mustard
  • 1/2 tsp Smoked Paprika
  • 1/4 tsp Cayenne Pepper (or to spice preference)
  • Salt & Black Pepper, as needed
  • Olive Oil, as needed

Instructions:

  • Prep Squash: Slice off the firm stalk at the end of the squash, then carefully slice it in half lengthways. Use a spoon to gut out the seeds.
  • Roast: Place on a baking tray flesh-side-up. Drizzle over a good glug of olive oil then sprinkle over 1/4 tsp salt & 1/8 tsp black pepper. Brush or rub into the squash. Place each half of the garlic bulb into the base of each squash with the exposed cloves facing down. Place in the oven at 190C/375F for 45-60mins, or until very soft and lightly charred/caramelized.
  • Blend: Squeeze out the garlic into a food processor or blender, then scoop out the squash and add that in too (discard skins). Add milk and stock then blend until completely smooth.
  • Pasta: Add macaroni to well-salted boiling water and cook until al dente. Drain when needed, reserving 1-2 cups of starchy pasta water.
  • Bacon: Meanwhile, fry the bacon in a large pot over medium heat until crisp with the fat rendered. Remove and place to one side.
  • Mac and Cheese: Add in the sauce and reduce heat to low. Stir in the cheese until it melts, then stir in dijon, smoked paprika, cayenne pepper and salt & black pepper (to taste, I typically do 1/4 salt tsp at this point). Stir in the cooked pasta alongside a splash of starchy pasta water to loosen up the sauce. Stir the bacon back through and check for seasoning/spice. If it's still a little thick continue stirring through the starchy pasta water a splash at a time until your desired consistency.

Quick 1 min demo!

Notes:

a) Starchy Pasta Water - This is a key ingredient as it not only thins out the sauce but also helps emulsify the fats and bind everything together. If you just add more stock or milk the sauce is just going to get more watery and potentially more grainy. I typically drain the macaroni over a jug or bowl to collect all of the water. Just make sure the water is well-seasoned so it doesn't dilute the flavour of the sauce.
b) Garlic - Using one whole bulb will give a fairly prominent garlic flavour. It does mellow out in the oven as it roasts, but if you're not a garlic lover I recommend just using two large cloves (one in each squash). 
c) Cheese - I love a combo of cheddar (which adds the bulk of the flavour) and some Gouda (for a touch of creaminess). I'd keep the cheddar, but you could sub the gouda with gruyere and I imagine it'll work perfectly. In all cases, it's important to grate the cheese yourself; the pre-grated stuff can turn the sauce grainy.
d) Calories - Whole recipe divided by 5 assuming 1 tbsp olive oil and 8 slices of bacon total.

Your Private Notes:

Nutrition:

Nutrition Facts
Butternut Squash Mac and Cheese
Amount Per Serving
Calories 902 Calories from Fat 436
% Daily Value*
Fat 48.4g74%
Saturated Fat 16.499g82%
Trans Fat 0.974g
Polyunsaturated Fat 2.194g
Monounsaturated Fat 9.051g
Cholesterol 83mg28%
Sodium 736mg31%
Potassium 1045mg30%
Carbohydrates 77.82g26%
Fiber 5.3g21%
Sugar 8.68g10%
Protein 39.44g79%
Vitamin A 1387IU28%
Vitamin C 34.6mg42%
Calcium 617mg62%
Iron 2.31mg13%
* Percent Daily Values are based on a 2000 calorie diet.
Nutrition is based on the absence of salt unless stated as a measurement in the ingredients. Cost is worked out based on ingredients bought from UK supermarkets, then divided by the number of servings. In both instances these values are just for guidance. Please check out my FAQ Page for more info.
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2 Comments

  • Reply
    Michele
    February 5, 2023 at 7:52 pm

    5 stars
    Nice way to sneak some vegetable into macaroni and cheese. I’m going to omit the garlic next time. Just seemed to conflict with the sweetness that the squash imparted.

    • Reply
      Chris Collins
      February 5, 2023 at 8:14 pm

      Thanks so much for popping back for a review, Michele! Hope it works to your taste a little better without the garlic 🙂 C.

    5 KNOCKOUT

    DINNERS

    YOU'LL NEVER STOP MAKING!

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