A Healthy and Effortless Meal for Busy Days
Have you ever craved a comforting bowl of pasta but wanted a healthier, low-carb alternative? If so, you’re in for a treat! With this easy recipe for sauce and spaghetti squash in a crockpot, you can enjoy the same satisfying flavors without the guilt. Whether you’re following a keto, paleo, gluten-free, or simply a balanced diet, this dish is a game-changer.
Cooking spaghetti squash might seem like a challenge, but that’s where your slow cooker comes to the rescue. Instead of roasting it in the oven or microwaving it in batches, you can let your crockpot do all the work. The result? A delicious, tender spaghetti squash paired with a rich, homemade tomato sauce—all in one pot.
This recipe is perfect for meal preppers, busy parents, or anyone who wants a hassle-free dinner that practically cooks itself. Ready to learn how? Let’s dive in!
Why You’ll Love This Crockpot Spaghetti Squash and Sauce Recipe
- Effortless Cooking: No need to monitor the stove—just set it and forget it.
- Healthy & Low-Carb: A perfect substitute for pasta with fewer carbs and calories.
- Rich & Flavorful: Slow cooking allows the flavors to blend beautifully.
- One-Pot Meal: Less cleanup, more convenience.
- Customizable: Add protein, extra veggies, or seasonings to suit your taste.
Health Benefits of Spaghetti Squash
Spaghetti squash is an incredible ingredient that’s not only delicious but also packed with nutrients. Here’s why it should be a staple in your kitchen:
Benefit | Why It’s Great |
---|---|
Low in Calories | Only about 40 calories per cup, compared to 220 in traditional pasta. |
High in Fiber | Promotes digestion and keeps you feeling full longer. |
Rich in Vitamins | Packed with vitamin C, B6, and antioxidants for overall health. |
Gluten-Free & Low-Carb | A great pasta alternative for those with gluten sensitivity or on keto. |
Ingredients for Crockpot Spaghetti Squash with Sauce
Main Ingredients
Here’s everything you’ll need to make this easy recipe for sauce and spaghetti squash in a crockpot:
Ingredient | Quantity | Purpose |
---|---|---|
Spaghetti squash | 1 medium (2-3 lbs) | Healthy pasta substitute |
Crushed tomatoes | 28 oz can | Base for a rich tomato sauce |
Ground beef or turkey (optional) | 1 lb | Adds protein and richness |
Onion, diced | 1 medium | Provides a deep, savory base |
Garlic, minced | 3 cloves | Enhances flavor and aroma |
Olive oil | 2 tbsp | Used for sautéing and adding richness |
Italian seasoning | 1 tsp | Adds a blend of classic herbs |
Salt & black pepper | To taste | Enhances overall taste |
Red pepper flakes (optional) | ¼ tsp | Adds a bit of heat |
Optional Add-Ins for Extra Flavor
- Grated Parmesan or nutritional yeast (for a cheesy kick)
- Fresh basil or parsley (adds brightness)
- Bell peppers, mushrooms, or zucchini (extra veggies for texture)
Step-by-Step Guide: How to Cook Spaghetti Squash and Sauce in a Crockpot

Step 1: Prepare the Spaghetti Squash
- Cut the spaghetti squash in half lengthwise. If it’s too hard to cut, pierce it with a fork and microwave it for 3-5 minutes.
- Use a spoon to scoop out the seeds.
- Lightly brush the cut side with olive oil and sprinkle with salt and black pepper.
Step 2: Assemble Ingredients in the Crockpot
- Pour crushed tomatoes and diced onions into the slow cooker.
- If using meat, brown it in a skillet first for extra flavor, then add it to the crockpot.
- Stir in garlic, olive oil, Italian seasoning, salt, and pepper.
- Place the spaghetti squash halves cut side down directly on top of the sauce.
Step 3: Slow Cook Until Tender
Now, it’s time to let your crockpot work its magic!
Setting | Cooking Time |
---|---|
Low | 6-8 hours |
High | 3-4 hours |
The squash is done when a fork easily pulls apart the strands.
Step 4: Shred the Spaghetti Squash & Serve
- Carefully lift out the softened squash halves and let them cool slightly.
- Use a fork to scrape out the strands, creating spaghetti-like noodles.
- Either mix the squash into the sauce or serve them separately.
- Garnish with fresh basil and grated Parmesan for an extra touch!
Common Mistakes and How to Avoid Them
While this easy recipe for sauce and spaghetti squash in a crockpot is simple, a few common mistakes can affect the final dish. Let’s go over how to fix them!
Why Is My Spaghetti Squash Too Mushy?
If your spaghetti squash turned out too soft and lost its signature “spaghetti-like” strands, here’s why:
- Overcooked: If left in the slow cooker for too long, it can become mushy. Try checking at the 6-hour mark on low to ensure it’s just tender.
- Too much moisture: Squash naturally releases water as it cooks. If your sauce is watery, allow it to simmer uncovered for the last 30 minutes.
- Crockpot differences: Some slow cookers run hotter than others. If yours cooks fast, consider reducing the cooking time.
My Sauce Is Too Watery – How Do I Fix It?
Because slow cookers trap moisture, the sauce may end up thinner than expected. Try these tricks to thicken it:
- Simmer uncovered: Let the sauce cook without the lid for the last 30 minutes.
- Add tomato paste: Stir in 1 tablespoon of tomato paste to help thicken the consistency.
- Use less liquid: If using canned tomatoes, drain some liquid before adding.
Can I Cook the Spaghetti Squash Whole?
Yes! If cutting a raw spaghetti squash is too difficult, cook it whole in the crockpot:
- Pierce the squash: Use a fork to poke a few holes in the skin.
- Place in the crockpot: Add it whole on top of the sauce.
- Cook for 6-7 hours on low: When it’s done, slice open, remove the seeds, and scrape the strands.
Recipe Variations to Try
One of the best things about this easy recipe for sauce and spaghetti squash in a crockpot is that it’s versatile. You can easily customize it to fit different flavors and dietary needs.
Italian Sausage & Spaghetti Squash
Want a richer, spicier version? Swap ground beef for Italian sausage.
Additional Ingredients:
- 1 lb Italian sausage (mild or spicy)
- ½ tsp fennel seeds (optional, enhances flavor)
- ½ tsp crushed red pepper flakes (for heat)
Instructions:
- Brown the sausage in a pan before adding it to the crockpot.
- Follow the same cooking process for the sauce and squash.
- Serve with freshly grated Parmesan and fresh basil.
Vegan Lentil Marinara with Spaghetti Squash
If you prefer a plant-based option, swap the meat for protein-packed lentils.
Additional Ingredients:
- 1 cup cooked lentils
- 1 tbsp balsamic vinegar (for depth of flavor)
- 1 tsp smoked paprika (adds a smoky taste)
Instructions:
- Add the lentils directly to the crockpot with the tomato sauce.
- Cook everything together for the same duration.
- Stir in balsamic vinegar before serving.
Cheesy Baked Spaghetti Squash Casserole
Turn this dish into a baked casserole for a comforting twist.
Additional Ingredients:
- 1 cup shredded mozzarella cheese
- ½ cup grated Parmesan
- ½ tsp Italian seasoning
Instructions:
- After slow cooking, transfer the spaghetti squash and sauce into a baking dish.
- Top with mozzarella and Parmesan cheese.
- Bake at 375°F for 15 minutes until bubbly.
Best Side Dishes to Serve with Crockpot Spaghetti Squash
Even though this dish is satisfying on its own, pairing it with the right sides can make it even better.
Side Dish | Why It Works |
---|---|
Garlic Bread | The crispy, buttery texture pairs perfectly with the sauce. |
Roasted Vegetables | Enhances the meal with extra fiber and nutrients. |
Fresh Salad | A light and refreshing side to balance the dish. |
Steamed Green Beans | Simple, healthy, and adds a pop of color to your plate. |
How to Store & Reheat Leftovers

This dish makes for fantastic leftovers, and proper storage will keep it fresh.
Storage Instructions
Storage Method | How Long? |
---|---|
Refrigerator (airtight container) | Up to 4 days |
Freezer (separate squash and sauce) | Up to 3 months |
Best Ways to Reheat
- Stovetop: Warm the sauce and squash separately in a pan over low heat.
- Microwave: Heat in 30-second intervals, stirring in between.
- Oven: Bake at 350°F for 15 minutes until heated through.
Frequently Asked Questions (FAQs)
Many people have questions when trying an easy recipe for sauce and spaghetti squash in a crockpot for the first time. Below, we’ve answered some of the most common ones!
Can I Cook Spaghetti Squash in the Crockpot Without Cutting It?
Yes! If cutting raw spaghetti squash is difficult, you can cook it whole.
- Pierce the squash: Use a fork to poke a few holes in the skin to allow steam to escape.
- Cook for 6-7 hours on low: The squash will soften, making it easier to slice open and remove the seeds.
- Shred after cooking: Once cut, use a fork to pull apart the strands.
Can I Use Store-Bought Pasta Sauce Instead of Making My Own?
Absolutely! If you’re short on time, you can use a high-quality marinara sauce instead of crushed tomatoes. Just pour it directly into the crockpot, and you’re good to go!
How Do I Make This Recipe Low-Carb or Keto-Friendly?
This dish is naturally low in carbs, but to make it even more keto-friendly:
- Use a low-carb tomato sauce: Check for brands with no added sugar.
- Skip the onions: They contain natural sugars that may not fit strict keto plans.
- Add more fat: Stir in butter, heavy cream, or olive oil for a richer sauce.
What Can I Do with Leftover Spaghetti Squash?
If you have extra spaghetti squash, here are a few creative ways to use it:
- Make spaghetti squash bowls: Use it as a base for taco bowls, stir-fries, or salads.
- Turn it into a frittata: Mix it with eggs, cheese, and veggies for a quick breakfast bake.
- Use it in a casserole: Layer it with sauce, cheese, and protein for a baked dish.
Extra Cooking Hacks for the Best Spaghetti Squash in a Crockpot
Want to make sure your dish turns out perfect every time? Here are some expert tips:
Tip #1: Add More Flavor with Roasted Garlic
For a richer, more complex sauce, try adding roasted garlic.
- Wrap a head of garlic in foil and roast it at 375°F for 30 minutes.
- Once soft, squeeze the roasted cloves into the crockpot before cooking.
Tip #2: Don’t Overcrowd the Crockpot
If you’re doubling the recipe, make sure not to overcrowd the slow cooker. Overfilling can cause uneven cooking and prevent the squash from softening properly.
Tip #3: Stir in Fresh Herbs at the End
Adding fresh basil or parsley after cooking enhances the dish’s freshness and aroma. Stir them in just before serving for the best flavor.
Tip #4: Try a Dairy-Free Creamy Sauce
For a creamy dairy-free sauce, blend in **coconut milk** or **cashew cream** during the last 10 minutes of cooking.
Explore More Delicious Recipes
Final Thoughts: A Delicious, Healthy Meal Made Easy
Making an easy recipe for sauce and spaghetti squash in a crockpot is a great way to enjoy a nutritious, flavorful meal without spending hours in the kitchen. This dish is perfect for anyone looking for a simple, healthy alternative to pasta.
Whether you follow the classic recipe or try one of the variations, you’re sure to love how effortless and delicious it is. Plus, with all the tips and hacks shared in this guide, you can customize it exactly to your liking.
Now it’s your turn! Try this recipe and let us know how it turned out. Do you have a favorite add-in or a unique twist? Share your thoughts in the comments below!
And don’t forget—if you love easy, flavorful meals, follow us on Facebook for more slow cooker recipes!
Happy cooking with Rita Chef ❤️!
Print
Sauce and Spaghetti Squash in Crockpot Recipe
- Total Time: 6 hours 10 minutes
- Yield: 4 servings
Description
A simple and delicious way to cook spaghetti squash and marinara sauce together in a crockpot for a healthy, low-carb meal with minimal effort.
Ingredients
One medium spaghetti squash (2-3 lbs)
One 28 oz can crushed tomatoes
One pound ground beef or turkey optional
One medium onion diced
Three cloves garlic minced
Two tablespoons olive oil
One teaspoon Italian seasoning
Salt and black pepper to taste
One fourth teaspoon red pepper flakes optional
Instructions
Cut spaghetti squash in half lengthwise and scoop out the seeds
Brush the cut side with olive oil and season with salt and black pepper
Pour crushed tomatoes and diced onions into the crockpot
If using meat brown it in a pan first then add it to the crockpot
Stir in garlic olive oil Italian seasoning salt and pepper
Place the spaghetti squash halves cut side down on top of the sauce
Cover and cook on low for six to eight hours or high for three to four hours
Carefully remove the squash from the crockpot and let cool slightly
Use a fork to scrape the spaghetti-like strands from the squash
Stir the spaghetti squash into the sauce or serve it separately
Garnish with fresh basil and grated Parmesan before serving
Notes
For a thicker sauce let it cook uncovered for the last 30 minutes
To add extra creaminess stir in half a cup of heavy cream at the end
For a spicier kick add more red pepper flakes or a splash of hot sauce
Store leftovers in an airtight container in the fridge for up to four days or freeze for up to three months
- Prep Time: 10 minutes
- Cook Time: 6 hours
- Category: Main Course
- Method: Slow Cooking
- Cuisine: Italian American
Nutrition
- Serving Size: One serving
- Calories: 250 kcal
- Sugar: 7 g
- Sodium: 600 mg
- Fat: 12 g
- Saturated Fat: 3 g
- Unsaturated Fat: 7 g
- Trans Fat: 0 g
- Carbohydrates: 22 g
- Fiber: 5 g
- Protein: 10 g
- Cholesterol: 15 mg
Keywords: spaghetti squash crockpot recipe slow cooker spaghetti squash low-carb marinara healthy spaghetti squash meal