Mac and Cheese Spaghetti Squash

Mac and Cheese Spaghetti Squash is the healthier version of baked macaroni and cheese. It has all of the cheesy goodness with less carbs.

One of my favorite ways to eat more vegetables is to use simple substitutes such as cauliflower rice and spaghetti squash. While the veggies may not be an exact replica of their high carb substitute, they are a great option. The whole family will love this mac and cheese spaghetti squash!

Start by cooking the spaghetti squash. You can find my detailed instructions on how to cook spaghetti squash here.

Use a fork to separate the strands of spaghetti squash and transfer it to a bowl. Save the spaghetti squash halves to use as cooking dishes and serving bowls.

Next make the cheese sauce. I adapted my cheese sauce recipe by adding more spices. Melt the butter in a saucepan over medium-low heat.

Add the flour to the melted butter and whisk to combine.

Cook the mixture while stirring for about 2 minutes

Slowly whisk in the milk a little at a time. Whisk until smooth before adding more. Bring the mixture to a simmer over medium-low heat, stirring often until it begins to thicken.

Add the garlic powder, black pepper, salt, and ground mustard.

Remove from heat and stir in the shredded cheddar cheese.

Add the spaghetti squash and stir to combine.

Cover the bottom of each spaghetti squash half with the cooked squash. Top with shredded cheddar cheese.

Can I make this in a casserole dish instead of the squash boats?

Yes, you can make this mac and cheese spaghetti squash in a casserole dish! Layer the spaghetti squash and cheese in a small greased casserole dish. Bake it just as you would if it were in the boats.

Top with the remaining spaghetti squash and sprinkle with more shredded cheese.

What kind of cheese should I use to make mac and cheese spaghetti squash?

I used cheddar cheese for both the cheese sauce and when layering. But you could use any shredded cheese that melts well. And if you want a little extra spice, try pepper jack cheese.

Bake the mac and cheese spaghetti squash at 350˚F for 20-25 minutes until the cheese is bubbly and just starting to brown.

Would it work to top it with breadcrumbs?

Yes, if you like a crunch topping on your macaroni and cheese you can definitely add it! Panko breadcrumbs are a great choice or you could use flavored breadcrumbs if you prefer.

Garnish the mac and cheese spaghetti squash with a little grated parmesan and some black pepper.

What should I serve with mac and cheese spaghetti squash?

This mac and cheese spaghetti squash could be served as a main dish with steamed broccoli and a salad on the side. Or it could be served as a side dish with oven baked chicken and a side salad.

Want more spaghetti squash recipes? Try these next:

This Chicken Alfredo Spaghetti Squash recipe is low carb comfort food that is easy to make. Your family won’t even miss the pasta!

Million Dollar Spaghetti Squash is a low carb recipe the whole family will love! This baked spaghetti squash casserole is pure comfort food full of flavor and cheesy goodness.

Easy Spinach Artichoke Spaghetti Squash with chicken recipe is a delicious low carb comfort food full of veggies!

Skip the heavy carbs and try this recipe for Spaghetti Squash with Meatballs. This healthy dinner recipe for squash boats is a great way to eat extra vegetables!