Side Dishes
This Trader Joe's butternut squash mac and cheese brings autumn comfort to your table with perfectly roasted squash and velvety cheese swirls that melt in every bite. The key lies in balancing sweet, caramelized squash with rich cheddar and a touch of creaminess that makes it irresistibly smooth.
I developed this recipe after testing countless versions, ensuring the squash stays tender while the cheese sauce remains lusciously thick—no lumps or watery textures here.
The beauty of this dish is its simplicity: roasted butternut squash adds natural sweetness and depth, while a classic cheese sauce made with sharp cheddar and a hint of cream delivers that signature mac and cheese satisfaction.
The roasting process transforms the squash into tender, caramelized cubes that hold their shape beautifully when mixed with the pasta and sauce. This isn’t just a side dish—it’s a hearty, flavorful centerpiece that pairs perfectly with grilled chicken or a fresh salad.
What you’ll end up with is a creamy, balanced mac and cheese where every forkful delivers a perfect harmony of flavors—sweet squash, sharp cheddar, and a touch of buttery richness. The sauce coats each noodle generously, ensuring no dry bites, while the roasted squash adds a satisfying texture contrast.
This recipe is designed to impress, whether you’re feeding a family or hosting a dinner party. Let’s get started on making this crowd-pleaser!
One of the best parts of this dish is its versatility—it works as a main course for lighter meals or as a satisfying side for heartier dinners. The roasted squash can be prepped ahead and stored in the fridge, making this a great make-ahead option for busy weeknights.
And if you love Trader Joe’s ingredients, this recipe is even easier with their pre-cut butternut squash or their own brand of sharp cheddar cheese. Trust me, once you try this version, you’ll never go back to the basic mac and cheese again.
Ingredients for trader joe's butternut squash mac and cheese
Quick grocery run plus pantry staples. Trader Joe's makes this even easier with their pre-cut squash and cheddar.
| Ingredient | Amount | Notes |
|---|---|---|
| Butternut Squash 🎃 | 2 lbs | Pre-cut or peeled/cubed |
| Elbow Macaroni 🍝 | 1 ½ cups | Uncooked, dry pasta |
| Sharp Cheddar Cheese 🧀 | 2 cups | Grated, Trader Joe's preferred |
| Heavy Cream 🥛 | ½ cup | Full-fat for creaminess |
| Whole Milk 🥛 | ½ cup | Warmed for smooth sauce |
| Yellow Onion 🧅 | 1 whole | Diced, medium size |
| Garlic Cloves 🧄 | 3 cloves | Minced, fresh preferred |
| Extra-Virgin Olive Oil 🫒 | ¼ cup | For roasting squash |
| Salt 🧂 | 1 ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Nutmeg 🌿 | ¼ tsp | Freshly grated |
| Butter 🧈 | 2 tbsp | Unsalted, for sauce |
| All-Purpose Flour 🌾 | 2 tbsp | For thickening sauce |
The squash is everything here. Trader Joe's pre-cut butternut squash saves time, but if you're cutting yourself, look for small, firm squash with no soft spots. The sharp cheddar matters too—Trader Joe's brand is my go-to, but any aged cheddar works. For the onion, yellow is classic, but red adds a little color if you're feeling fancy. Roast the squash until it's tender but still holds shape—fork-tender is perfect. I always grab extra squash because it reheats beautifully for leftovers.
No sharp cheddar? Parmesan or Gruyère adds depth, but cheddar is the star here. Heavy cream can be swapped for half-and-half or whole milk>, though the sauce won't be quite as rich. Fresh nutmeg is ideal, but if you've only got pre-ground, double the amount—it loses potency fast. The flour is just for thickening, so don't skip it unless you're okay with a thinner sauce. For a vegan version, swap the cheese for nutritional yeast and cashew cream, but trust me, the original is worth it.
Roasted squash keeps for 5 days in the fridge—perfect for meal prep. The cooked pasta and sauce reheat well, but add a splash of milk to loosen it up. Freeze portions for up to 3 months by storing in airtight containers. I always make this for game day—it's a crowd-pleaser that reheats like a dream. The nutmeg and black pepper add warmth, so don't skip those final touches.
Why You'll Love This Recipe
- 20-Minute Magic: I swear, the butternut squash puree from Trader Joe’s does all the work—just heat, stir, and melt. No peeling, no dicing, no stress, just creamy perfection in one pot.
- Creamy Crunch Combo: That sharp cheddar and heavy cream make it rich, but the roasted squash adds this just-right sweetness—like a hug in a bowl. The elbows stay al dente, so every bite has texture.
- Leftover Hero: Between us, this tastes better the next day. I’ll make a big batch on Sunday, reheat portions all week, and still have leftovers for movie night. (Yes, even on a Tuesday night.)
- Budget-Friendly Luxe: Sharp cheddar and squash stretch this into a full meal without breaking the bank. It’s the kind of dish that makes you feel fancy while keeping your wallet happy—no guilt, just flavor.
Step-by-step instructions for Trader Joe's butternut squash mac and cheese
Here's how to create the perfect balance of roasted squash and velvety cheese sauce.
Roast the Butternut Squash Until Tender
Preheat your oven to 400°F. Cut the 2 lbs butternut squash into 1-inch cubes (peeled if preferred). Toss the squash with 0.25 cup extra-virgin olive oil, 0.5 tsp salt, 0.25 tsp black pepper, and 0.25 tsp nutmeg until evenly coated.
Spread the seasoned squash in a single layer on a rimmed baking sheet. Roast for 25-30 minutes until the edges are golden brown and a knife slides in easily. You'll know it's perfect when the flesh is tender and slightly caramelized. Remove from the oven and let cool slightly before transferring to a food processor.
Cook the Elbow Macaroni Al Dente
While the squash roasts, bring a large pot of water to a rolling boil. Add 1.5 cups elbow macaroni and 1.5 tsp salt to the boiling water. Cook for 1 minute less than the package instructions suggest (about 11-12 minutes) for al dente pasta.
Drain the pasta, reserving 1 cup of the starchy pasta water. This water is the secret to a creamy sauce that clings perfectly to each noodle. Return the drained pasta to the pot and set aside, covered, to keep warm.
Build the Creamy Cheese Sauce
In a large skillet, melt 2 tbsp butter over medium heat. Add the 1 whole diced yellow onion and 3 minced garlic cloves, cooking for 3-4 minutes until the onion is translucent and the garlic is fragrant. Be careful not to let the garlic burn—it should just add aroma, not bitterness.
Reduce the heat to low and whisk in 2 tbsp all-purpose flour, cooking for 1 minute to remove the raw flour taste. Slowly pour in 0.5 cup heavy cream and 0.5 cup warmed whole milk, whisking constantly until the mixture thickens into a smooth sauce. Stir in 2 cups grated sharp cheddar cheese until fully melted and creamy.
Combine Everything for Maximum Creaminess
Add the cooked elbow macaroni and roasted butternut squash to the cheese sauce. Stir gently but thoroughly to combine, adding reserved pasta water 1 tablespoon at a time if the sauce becomes too thick. The goal is a sauce that coats the back of a spoon but still clings beautifully to each noodle.
Taste and adjust seasoning with additional salt or black pepper if needed. The nutmeg in the roasted squash should add a warm, earthy note that complements the sharp cheddar. For extra richness, you can stir in an additional 2 tbsp heavy cream if desired.
Serve Warm with Optional Garnishes
Transfer the mac and cheese to a serving dish and let it sit for 2-3 minutes to allow the flavors to meld. The roasted squash should be warm throughout, and the cheese sauce should be silky smooth. Serve immediately while warm, garnished with additional grated sharp cheddar cheese and a sprinkle of freshly cracked black pepper.
This dish delivers on the creamy promise with every bite—the roasted squash adds natural sweetness that balances the rich, sharp cheddar, while the al dente pasta provides the perfect texture contrast. The nutmeg and black pepper tie everything together for a comforting, flavorful meal that's perfect for any occasion.
Pro Tips For Making Trader Joe'S Butternut Squash Mac And Cheese
- Roast Squash First: Peel and cube the butternut squash before roasting—it cooks faster and more evenly. I used to skip this step, thinking it saved time, but the uneven doneness throws off the whole dish. Aim for tender but not mushy squash; it should yield slightly when pierced with a fork.
- Salt the Pasta Water: Use the full 4 cups of salted pasta water (yes, even if it seems excessive). The starch in that water is what makes this mac and cheese creamy and clingy—no extra roux or heavy cream needed to fix it later. Trust me, your elbows will thank you.
- Avoid Overmixing the Cheese: Once the cheese melts, stir just enough to combine—lumpy is better than gluey. I learned this after turning one batch into a sad, rubbery slab. The sharp cheddar needs texture, not a food processor’s touch.
- Save the Starchy Water: Reserve ½ cup of the pasta water before draining—it’s liquid gold for balancing the sauce. Add it in small splashes if the cheese sauce gets too thick, but don’t overdo it or you’ll dilute the flavor. (Yes, even if you’re impatient like me.)
Storing and reheating this recipe
Fridge Storage Tips
Store your leftover butternut squash mac and cheese in an airtight container for up to 4 days in the refrigerator. The roasted squash and cheese sauce blend beautifully overnight, intensifying flavors.
I always portion mine into glass Pyrex containers—they keep the dish tasting fresh and prevent that dreaded "soggy" texture. 🥫
Freezer Prep Guide
For longer storage, freeze portions in airtight containers or silicone molds for up to 3 months. Let the dish cool completely before freezing to avoid ice crystals.
When reheating, add 1-2 tablespoons of milk or heavy cream to restore creaminess. I use quart-sized freezer bags for easy single-serving portions—just thaw overnight in the fridge. ❄️
Stovetop Reheating
My favorite method is stovetop reheating for that restaurant-quality texture. Transfer mac and cheese to a skillet over medium-low heat and add 2-3 tablespoons of milk to loosen the sauce.
Stir gently for 5-7 minutes until heated through—165°F internal temperature is perfect. Avoid high heat to prevent the cheese from separating. 🔥
Microwave Fixes
For quick reheating, cover your portion with a damp paper towel and microwave on 50% power for 2-3 minutes. Stir halfway, then continue in 30-second bursts until hot.
The damp towel prevents drying, while low power keeps the sauce smooth. I always add a splash of milk after reheating to restore creaminess. 💫
Reviving Day-Old Leftovers
If your mac and cheese tastes a bit dry after refrigeration, simply stir in 1-2 tablespoons of milk or heavy cream and reheat. The roasted squash absorbs flavors beautifully, so don’t worry about texture—just give it a good stir.
For extra richness, top with a sprinkle of grated cheddar and a pat of butter before serving. 🧀
Garnish for Freshness
Brighten up reheated mac and cheese with freshly cracked black pepper and a drizzle of extra-virgin olive oil. For a pop of color, add toasted breadcrumbs or chopped parsley. These simple garnishes make leftovers feel like a freshly made dish every time. ✨
Nutrition facts
Frequently asked questions
Can I use Trader Joe's pre-cut butternut squash for this recipe?
Trader Joe's pre-cut butternut squash cubes are perfect for this dish—they save time while delivering the same tender, caramelized flavor. Just toss them directly with the olive oil and seasonings without peeling. The pre-cut version works especially well for busy weeknights when you want to skip the chopping step entirely.
What kind of cheese works best for this mac and cheese?
Sharp cheddar is the star here, but you can mix in Gruyère or Parmesan for extra depth. Trader Joe's own sharp cheddar is ideal, but any aged cheddar with good meltability works. Avoid pre-shredded cheese (it contains anti-caking agents that prevent smooth melting). For a creamier sauce, blend the cheese first or use a food processor to break up any clumps.
Why does my cheese sauce get grainy?
Grainy cheese usually means the sauce cooled too quickly or didn't melt completely. To fix this, whisk in 1-2 tablespoons of warm milk or heavy cream while stirring over low heat. For prevention, melt the cheese slowly over low-medium heat and avoid high heat that causes separation. If using a microwave, stir frequently and add small amounts of liquid to help emulsify.
Can I make this mac and cheese ahead of time?
Yes! The roasted squash can be prepped 2 days ahead and stored in the fridge. Assemble the dish up to 1 day ahead—the flavors actually improve overnight. For best results, reheat on the stovetop with a splash of milk to restore creaminess. The sauce will thicken slightly when chilled, so add a little extra liquid when reheating if needed.
How can I make this dish vegetarian or vegan?
For vegetarian, use dairy-free cheese alternatives like Violife or Miyoko's. For vegan, replace the cheese with cashew cream> (soaked cashews blended with water) and nutritional yeast for cheesy flavor. The roasted squash and pasta remain the same, but you'll need to adjust the sauce thickness with plant-based milk or cornstarch slurry. The texture will be lighter but still delicious.