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Creamy Butternut Squash Mac and Cheese: Easy 30-Min Recipe

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This creamy butternut squash mac and cheese is a quick 30-minute recipe that combines the comfort of classic mac and cheese with the subtle sweetness of butternut squash. It’s secretly healthy, crowd-pleasing, and perfect for weeknight dinners or potlucks.

Ingredients

Scale
  • 12 ounces elbow macaroni or small pasta shells
  • 2 cups frozen butternut squash cubes (about 10 ounces)
  • 1½ cups whole milk
  • 1 cup low-sodium chicken or vegetable broth
  • 2 cups shredded sharp cheddar cheese
  • ½ cup grated Parmesan cheese
  • 2 tablespoons unsalted butter
  • 2 tablespoons all-purpose flour
  • 1 small yellow onion, finely diced (about ½ cup)
  • 2 cloves garlic, minced
  • ½ teaspoon smoked paprika
  • ¼ teaspoon ground nutmeg
  • Salt and black pepper to taste (about 1 teaspoon salt and ½ teaspoon pepper)
  • Optional topping: ½ cup panko breadcrumbs mixed with 2 tablespoons melted butter

Instructions

  1. Cook the squash (5 minutes): In a small saucepan, combine the frozen butternut squash cubes and ½ cup of the broth. Bring to a simmer over medium heat, then cover and cook for 5-7 minutes, until the squash is tender when pierced with a fork. Don’t drain it—you want that cooking liquid. Set aside to cool slightly.
  2. Boil the pasta (8-10 minutes): While the squash cooks, bring a large pot of salted water to a rolling boil. Add the pasta and cook according to package directions until al dente. Undercook it by about 1 minute because it will continue cooking in the oven. Drain the pasta, reserving about ½ cup of pasta water (just in case your sauce needs thinning later). Don’t rinse the pasta—you want that starch to help the sauce stick.
  3. Start the sauce base (5 minutes): In your medium saucepan, melt the butter over medium heat. Add the diced onion and cook for 2-3 minutes until it’s soft and translucent. Add the minced garlic and cook for another 30 seconds until fragrant.
  4. Make the roux (2 minutes): Sprinkle the flour over the onion mixture and stir constantly for 1-2 minutes. The mixture will look like a thick paste. Keep stirring until it turns a light golden color—this cooks out the raw flour taste. If it starts to brown too fast, lower the heat.
  5. Add the liquids (3 minutes): Slowly pour in the milk while whisking constantly to prevent lumps. Then add the remaining ½ cup of broth (the rest went with the squash). Keep whisking until the sauce thickens enough to coat the back of a spoon, about 2-3 minutes. It should look smooth and slightly glossy.
  6. Blend the squash (2 minutes): Transfer the cooked squash and its liquid to your blender or use an immersion blender directly in the saucepan. Puree until completely smooth. The mixture should be thick but pourable—like a very smooth pumpkin puree. If it seems too thick, add a splash of the reserved pasta water.
  7. Combine the sauce (3 minutes): Pour the squash puree into the milk sauce and whisk until fully combined. The color should turn a beautiful pale orange. Add the smoked paprika, nutmeg, 1 teaspoon salt, and ½ teaspoon pepper. Taste it here—it should be well-seasoned because the pasta will absorb some salt later.
  8. Melt the cheese (2 minutes): Reduce the heat to low. Add the shredded cheddar and Parmesan cheese one handful at a time, stirring gently until each addition melts completely. Don’t rush this—high heat will make the cheese grainy and separated. The sauce should be smooth, thick, and velvety. If it seems too thick, stir in a splash of the reserved pasta water.
  9. Combine everything (1 minute): Add the cooked pasta to the sauce and stir gently until every piece is coated. Take a moment to look at it—that glossy, creamy sauce clinging to the pasta is a beautiful thing. Taste and adjust seasoning if needed.
  10. Optional crispy topping (5 minutes): If you’re using the panko topping, melt 2 tablespoons butter and mix with ½ cup panko breadcrumbs. Sprinkle evenly over the mac and cheese. This step is totally optional, but honestly, that crunchy contrast makes the dish feel special.
  11. Bake (15-20 minutes): Preheat your oven to 375°F. Transfer the mac and cheese to your greased 9×13 baking dish. Bake for 15-20 minutes until bubbly around the edges and golden on top. If you used the panko topping, it should be nicely browned. Let it rest for 5 minutes before serving—this helps the sauce set up so it doesn’t run all over the plate.

Notes

You can prepare everything up to step 10 the night before. Just cover the dish with foil and refrigerate. When you’re ready to serve, add 5-10 minutes to the baking time since you’re starting from cold. This is a lifesaver when you’re juggling multiple dishes for a dinner party.

Nutrition

Keywords: butternut squash mac and cheese, creamy mac and cheese, easy mac and cheese, 30-minute recipe, comfort food, vegetarian, butternut squash recipe, mac and cheese with squash, healthy mac and cheese

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