Easy Spaghetti Squash Casserole Recipe

Name: Easy Spaghetti Squash Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 spaghetti squash (med-smallish); 1 cup spaghetti sauce or 1 cup fire-roasted tomatoes; 1/2 cup grated parmesan cheese; 1 cup mushroom (sliced or diced); 1 small sweet onion; 1/2 lb ground beef (optional); 1/2 cup Italian sausage (optional); 1 tablespoon butter (may use just oil if vegan); 1 tablespoon olive oil; 1 cup shredded mexican cheese or 1 cup Italian cheese blend; 1 scoop sour cream or 1 scoop Greek yogurt

Servings: persons

1 spaghetti squash (med-smallish)
1 cup spaghetti sauce or 1 cup fire-roasted tomatoes
1/2 cup grated parmesan cheese
1 cup mushroom (sliced or diced)
1 small sweet onion
1/2 lb ground beef (optional)
1/2 cup Italian sausage (optional)
1 tablespoon butter (may use just oil if vegan)
1 tablespoon olive oil
1 cup shredded mexican cheese or 1 cup Italian cheese blend
1 scoop sour cream or 1 scoop Greek yogurt

1
1. Cut spaghetti squash in half (length wise). Scoop out seed from center. Put in baking pan cut side down. Pour in 2 cups water (enough to cover bottom of pan plus a little). Cover with foil. Bake 350 degrees for approximately one hour - depending on size. Test for doneness with a fork. Fork should pierce the squash easily. (if you like your squash less done then cook accordingly).
2
2. When done take fork/spoon and scrape out the fibers of the squash. Drain well to get rid of liquid.
3
WHILE SQUASH IS BAKING:
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3. Brown up ground beef and Italian sausage. Drain. Set aside.
5
WHILE SQUASH IS BAKING ABOUT 1/2 WAY THROUGH (@30 MIN MARK):
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4. Dice up onions and mushrooms.
7
5. Sautee onion in butter/oil. When onions start to brown add mushrooms. When done add in spaghetti sauce and/or fire roasted tomatoes. Heat til warm. Remove from heat.
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6. Mix in baked squash, ground beef, sausage and parmesan cheese. Transfer to baking dish. Top with 1 cup. shredded cheese.
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7. Bake 350 until cheese is melted and slightly browning. About 1/2 hour.
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8. Remove from oven serve. Serve with spoonful of sour cream or plain greek yogurt.

424

kcal

Calories

Fat

Carbs

Protein

Fat Carbs Protein

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 11 ingredients. The key ingredients include: 1 spaghetti squash (med-smallish), 1 cup spaghetti sauce or 1 cup fire-roasted tomatoes, 1/2 cup grated parmesan cheese, 1 cup mushroom (sliced or diced), and more.

Yes, Easy Spaghetti Squash Casserole falls under the Pasta & Noodles category and is a great choice for this type of meal.

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

That's it — enjoy your meal!

Easy Spaghetti Squash Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions