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Spaghetti Squash with Grass Fed Beef and Mushroom Marinara Sauce

Spaghetti Squash with Grassfed Beef and Mushroom Marinara

There are so many different things you can do with spaghetti squash, but one of our favorites at Prep Dish is as an alternative to gluten-free pastas.  In fact, if you are looking to cut calories, it has about 1/5th the calories per serving compared to an average gluten-free pasta.  This super yummy recipe is such a hit with our subscribers, we put it back on the menu for October! Try it for yourself and see what all the buzz is about.


  • 1 2-3# spaghetti squash
  • 1# grass-fed, organic ground beef, 95%
  • 25.5 oz tomato sauce or crushed tomatoes
  • 1/2 onion, diced
  • 2-3 cloves garlic, minced to equal 1T
  • 1 tub of sliced mushrooms
  • 2-3T herbs de Provence (or Italian herb blend)


Pierce the spaghetti squash with a knife and roast for ~1.5 hours (for 2 small) or ~2 hours for 1 large squash (or until a knife easily pierces the skin). Carefully slice squash in half, allowing heat to escape. Set aside and allow to cool, remove seeds, then scoop out squash.

In a large sauté pan, add beef, 1T garlic, chopped onion, 1 tub sliced mushrooms, and sauté 15 min, continuing to break apart meat and stirring occasionally.
Add 25.5oz jar of tomato sauce, season w/ 2-3T herbs de Provence, S&P to taste. Stir to combine, shut off heat, cool.

 Serve spaghetti squash topped with tomato sauce. Option to grate parmesan overtop.

Some Prep Dish Tips:
This dish is a perfect make-ahead meal. Prep your sauce and your squash on a Sunday and pull it out anytime during the week for mealtime. Have leftover sauce? Freeze it for when you need an emergency meal!

Spaghetti squash also makes a great vegetable side.  Some suggestion include:

  • serving it mixed with pesto
  • adding it to vegetable soup for a change in texture
  • chilling it to toss with salads

Even the seeds can be toasted for a crunchy snack.  Make this versatile veggie a staple in your fridge.


chef created gluten free dairy free meal plans

Chef Allison Stevens MS, RD, LD

Prep Dish is a gluten-free & paleo meal planning website. Celebrity personal chef & dietitian Allison Stevens thoughtfully crafts each plan using her own well-tested recipes.  Each meal plan allows you, the home cook, to spend only 2-3 hours preparing a week’s worth of crave-worthy, gluten-free, healthy meals using seasonal, whole foods (nothing processed!). We aim to save you time while keeping your family’s taste buds happy. 

 Along with a weekly menu, you’ll get a printable grocery list and recipes for prep day — just one day of preparation yields scrumptious, good-for-you dishes all week long. Click to start


  1. Tiffany Cavegn says:

    I tried this today and it was amazing! I’m going to cook it again with the little people and cross my fingers that they will at least try it 🙂

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