Keto spaghetti squash with beef is the perfect answer when you want comfort food without the carbs. Roasted squash strands soak up a rich, savory beef sauce, giving you all the cozy flavors of pasta night—without the guilt. It’s hearty, gluten-free, and a dish that satisfies both low-carb eaters and pasta lovers alike.
I love creating family-friendly recipes that balance flavor and nutrition. If you enjoy comforting dinners like my creamy beef and shells, this spaghetti squash alternative will quickly become a weeknight favorite. It’s simple, wholesome, and guaranteed to bring everyone back for seconds.
Why You’ll Love This Keto Spaghetti Squash
- Quick and easy to prepare, perfect for busy weeknights.
- A delicious low-carb spaghetti squash option that satisfies pasta cravings.
- Rich in flavor, thanks to the savory beef and marinara sauce.
- Gluten-free, making it suitable for various dietary needs.
- Versatile and customizable with your favorite veggies or spices.

Keto Spaghetti Squash Recipe with Beef
- Total Time: 50 minutes
- Yield: 4 servings
- Diet: Keto
Description
A delicious and easy recipe for Keto Spaghetti Squash with Beef, perfect for a low-carb meal.
Ingredients
- 1 lbs Ground Beef
- 16 oz Marinara Sauce
- 1 small Onion
- 2 whole Garlic Cloves
- 1 tsp Sea Salt
- 1/2 tsp Cumin
- 1/2 tsp Onion Salt
- 1 medium Spaghetti Squash
Instructions
- Preheat the oven to 400°F (200°C).
- Cut the spaghetti squash in half lengthwise and scoop out the seeds.
- Place the squash halves cut-side down on a baking sheet and roast for 30-40 minutes until tender.
- While the squash is roasting, heat a skillet over medium heat and add the ground beef, cooking until browned.
- Add chopped onion and minced garlic to the skillet, cooking until the onion is translucent.
- Stir in the marinara sauce, sea salt, cumin, and onion salt, and let simmer for 10 minutes.
- Once the squash is done, use a fork to scrape the flesh into spaghetti-like strands.
- Serve the beef mixture over the spaghetti squash strands.
Notes
- For a spicier dish, add red pepper flakes to the beef mixture.
- This recipe can be made ahead and stored in the refrigerator for up to 3 days.
- Feel free to add vegetables like bell peppers or mushrooms to the beef mixture for extra flavor.
- Prep Time: 10 minutes
- Cook Time: 40 minutes
- Category: Main Dish
- Method: Roasting and Sautéing
- Cuisine: American
Ingredients for Keto Spaghetti Squash
Gathering the right ingredients is key to making a fantastic Keto Spaghetti Squash. Here’s what you’ll need:
- Ground Beef: This is the star of the dish, providing protein and flavor. You can use lean beef or even ground turkey for a lighter option.
- Marinara Sauce: A rich, savory sauce that ties everything together. Look for a low-sugar version to keep it keto-friendly.
- Onion: Adds sweetness and depth to the beef mixture. Yellow or white onions work best, but feel free to experiment!
- Garlic Cloves: Fresh garlic brings a wonderful aroma and flavor. If you’re in a pinch, garlic powder can be a quick substitute.
- Sea Salt: Essential for enhancing all the flavors in your dish. You can adjust the amount based on your taste preferences.
- Cumin: This spice adds a warm, earthy note. If you’re not a fan, you can skip it or replace it with Italian seasoning.
- Onion Salt: A great way to boost the onion flavor without chopping more onions. If you don’t have it, just use regular salt.
- Spaghetti Squash: The star of the show! This low-carb spaghetti squash is a fantastic pasta alternative. Look for a firm squash with a smooth skin.

For those who like to get creative, consider adding vegetables like bell peppers or mushrooms to the beef mixture for extra flavor and nutrition. You can find the exact quantities for each ingredient at the bottom of the article, ready for printing!
How to Make Keto Spaghetti Squash
Now that we have our ingredients ready, let’s dive into the fun part: making this delicious Keto Spaghetti Squash! Follow these simple steps, and you’ll have a meal that’s not only tasty but also a fantastic low-carb spaghetti squash alternative.
Step 1: Preheat the Oven
First things first, preheat your oven to 400°F (200°C). Preheating is crucial because it ensures even cooking. You want that spaghetti squash to roast perfectly, creating those tender strands we all love. Trust me, a hot oven makes a world of difference!
Step 2: Prepare the Spaghetti Squash
Next, grab your spaghetti squash. Carefully cut it in half lengthwise. Use a sharp knife and take your time—safety first! Once halved, scoop out the seeds with a spoon. This step is essential for getting those beautiful strands later. Don’t worry if it feels a bit tough; that’s normal!
Step 3: Roast the Squash
Place the squash halves cut-side down on a baking sheet. Roast them in the preheated oven for about 30-40 minutes. You’ll know it’s done when the flesh is tender and easily pulls away with a fork. Keep an eye on it; overcooking can make it mushy, and we want those lovely spaghetti-like strands!
Step 4: Cook the Beef Mixture
While the squash is roasting, heat a skillet over medium heat. Add the ground beef and cook until it’s browned. This should take about 5-7 minutes. Once browned, toss in the chopped onion and minced garlic. Cook until the onion is translucent, filling your kitchen with a mouthwatering aroma!
Step 5: Combine Ingredients
Now it’s time to bring it all together! Stir in the marinara sauce, sea salt, cumin, and onion salt into the beef mixture. Let it simmer for about 10 minutes. This allows the flavors to meld beautifully, creating a rich sauce that pairs perfectly with your roasted spaghetti squash.
Step 6: Scrape and Serve
Once the squash is done roasting, take it out of the oven. Use a fork to scrape the flesh into spaghetti-like strands. It’s like magic watching it transform! Serve the savory beef mixture over the top of the squash strands. Enjoy your delicious, low-carb meal that’s sure to impress!

Tips for Success
- Always use a sharp knife when cutting the spaghetti squash for safety and ease.
- Check the squash for doneness by piercing it with a fork; it should be tender but not mushy.
- Feel free to customize the beef mixture with your favorite spices or veggies.
- For meal prep, store leftovers in an airtight container for up to three days.
- Reheat gently to maintain the texture of the spaghetti squash.
Equipment Needed
- Sharp Knife: Essential for cutting the spaghetti squash. A serrated knife works well too.
- Baking Sheet: Use a rimmed baking sheet to catch any juices while roasting.
- Skillet: A non-stick skillet is great for browning the beef.
- Fork: Needed for scraping the squash into strands.
- Spoon: Useful for scooping out the seeds from the squash.
Variations To Try
- Spicy Kick: Add red pepper flakes or diced jalapeños to the beef mixture for a spicy twist.
- Vegetarian Option: Substitute ground beef with lentils or mushrooms for a hearty, plant-based meal.
- Cheesy Delight: Top the finished dish with shredded mozzarella or parmesan cheese before serving for a creamy finish.
- Herb Infusion: Mix in fresh herbs like basil or parsley to the beef mixture for a burst of freshness.
- Italian Style: Use Italian sausage instead of ground beef for a flavorful, savory alternative.
Serving Suggestions
- Pair your Keto Spaghetti Squash with a fresh garden salad for a light, refreshing side.
- Serve with a glass of sparkling water infused with lemon or cucumber for a zesty drink.
- Garnish with fresh basil or parsley for a pop of color and flavor.
- Consider adding a sprinkle of grated parmesan cheese for an extra touch of richness.
FAQs about Keto Spaghetti Squash
What is Keto Spaghetti Squash?
Keto Spaghetti Squash is a delicious low-carb spaghetti squash alternative that replaces traditional pasta. It’s perfect for those following a ketogenic diet, offering a satisfying texture without the carbs.
How do I store leftovers of Keto Spaghetti Squash?
What is Keto Spaghetti Squash?
Keto Spaghetti Squash is a delicious low-carb spaghetti squash alternative that replaces traditional pasta. It’s perfect for those following a ketogenic diet, offering a satisfying texture without the carbs.
How do I store leftovers of Keto Spaghetti Squash?
Store any leftovers in an airtight container in the refrigerator for up to three days. Reheat gently in the microwave or on the stovetop to maintain the texture of the roasted spaghetti squash.
Can I freeze Keto Spaghetti Squash?
Yes, you can freeze cooked spaghetti squash! Just make sure to let it cool completely before transferring it to a freezer-safe container. It can last up to three months in the freezer.
What can I serve with Keto Spaghetti Squash?
Pair your Keto Spaghetti Squash with a fresh salad, roasted vegetables, or a side of garlic bread made with low-carb ingredients. It’s a versatile dish that complements many sides!
Are there any variations I can try with this recipe?
Absolutely! You can customize your Keto Spaghetti Squash by adding different vegetables, using ground turkey instead of beef, or even making it vegetarian with lentils. The possibilities are endless!
Conclusion
This keto spaghetti squash with beef proves that low-carb meals can still deliver big comfort and flavor. With tender squash, savory beef, and melted cheese, it’s a dish that feels indulgent yet keeps things light. Perfect for busy weeknights, family dinners, or even meal prep, it’s a recipe you’ll come back to again and again.
If you’re craving more cozy dinners, try my cheesy mac and cheese meatloaf casserole or my quick honey garlic ground beef with broccoli. Both are simple, flavorful, and perfect for feeding hungry families.
Did you enjoy this recipe? Save it on Pinterest so you can find it easily, and subscribe to my newsletter for weekly quick and delicious recipes!