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+ servings
A yellow squash casserole with a spoon on a plate.
5 from 1 vote

Spaghetti Squash Mac and Cheese

This spaghetti squash mac and cheese comes complete with a homemade cheese sauce and breadcrumb topping. Prep and serve in under an hour!
Prep 20 minutes
Cook 50 minutes
Total 1 hour 10 minutes
Fat 35
Carbs 18
Protein 22
Yield 4

Ingredients

Topping

Cheese Sauce

  • 2 tablespoons unsalted butter
  • ½ teaspoon cracked peppercorns*
  • 2 tablespoons all purpose flour
  • 1 cup whole milk
  • ½ cup shredded mozzarella cheese
  • ½ cup shredded gouda cheese
  • 1 teaspoon chipotle hot sauce
  • 1 teaspoon salt

Instructions

  • Preheat the oven to 400ºF and line a baking sheet with parchment paper.
  • Next prepare the spaghetti squash. Use a large, sharp knife to carefully slice the spaghetti squash in half lengthwise (hotdog style). Remove the innards of the spaghetti squash out with a spoon.
  • Drizzle about 2 teaspoons of olive oil over each half of the spaghetti squash and then season with ¼ teaspoon of salt and ¼ teaspoon of ground pepper.
  • Place the spaghetti squash open side-down on the lined baking sheet and bake for 20 minutes at 400ºF.
  • While the spaghetti squash is baking, prepare the mac and cheese topping. Add the corn flakes to a food processor and process until the corn flakes look like breadcrumbs. Add garlic powder, thyme, parsley, red pepper flakes, salt and mozzarella cheese to the food professor and pulse until just combined. Set aside for later.
    A food processor filled with nuts and seeds.
  • After 20 minutes, flip each half of the spaghetti squash over and bake for another 20 minutes. We recommend checking the squash with a fork after 10 minutes to make sure your spaghetti squash isn’t getting mushy. Every oven is different so the time may vary.
    Two slices of baked sweet potato on a baking sheet.
  • While the spaghetti squash is baking, prepare the cheese sauce by making a roux. Heat a small saucepan over medium/high heat. Add butter. When the butter is melted add the cracked pepper corns to the butter. When the pepper is fragrant, add flour and whisk until the butter and flour form a paste. Cook the paste for about 1 minute.
    A pan with cheese in it and a whisk.
  • Slowly add milk to the pot, whisking constantly. Continue to whisk the roux over medium heat for about 4-6 minutes or until the roux thickens.
  • When the roux is thick, remove from heat and add the gouda cheese and mozzarella cheese. Stir until the cheese has melted.
  • Add the hot sauce and salt to the cheese sauce and mix again to combine. Set cheese sauce aside.
  • Remove the spaghetti squash from the oven and let it rest for 5 minutes before carefully “fluffing” the edges of the squash with a fork to loosen the spaghetti squash from the skin of the skin.
    Two baked squash boats on a baking sheet with a fork.
  • Turn the heat on the oven to broil.
  • Pour half of the cheese sauce into each half of the fluffed spaghetti squash and gently toss the “spaghetti squash noodles” with the sauce until they are coated.
    Two squash boats with a fork on top.
  • Top each spaghetti squash half with 2-3 tablespoons of the corn flake topping and drizzle the olive oil over the tops of each squash. Place the squash in the oven and broil for 1-2 minutes or until golden brown. Be sure to keep an eye on the squash as every broiler is different.
    A yellow squash casserole with a spoon on a plate.
  • Remove the squash from the oven and enjoy.

Tips & Notes

  • We used a 1.75-lb squash for this recipe. The size of squash will determine how long you have to bake your squash.
  • We crack whole peppercorns using a mortar and pestle. If you don’t have a mortar and pestle then you can use a pepper grinder.
  • You can change up what type of cheese you use. We recommend trying sharp yellow or orange cheddar.

Nutrition Facts

Calories: 471kcal | Carbohydrates: 18g | Protein: 22g | Fat: 35g | Fiber: 1g | Sugar: 3g