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This Plant Based Spaghetti is rooted in the Mediterranean tradition of hearty, whole-food cooking. Walnuts and mushrooms replace ground meat in a rich, savory sauce inspired by the flavors Maria grew up with. It’s simple, one-pot cooking with real ingredients, and no processed substitutes, making a deeply satisfying plant based spaghetti sauce that everyone will love.
Why You’ll Love Plant Based Spaghetti
- Whole-food “meat” sauce: Walnuts and mushrooms create a texture similar to ground meat without any processed substitutes, keeping the dish real and wholesome, just like Mediterranean home cooking.
- One-pot comfort: Everything comes together in a single pot, making weeknight cleanup easy.
- Packed with nutrition: Walnuts bring omega-3s and protein, while mushrooms deliver B vitamins, selenium, and deep umami flavor. This is comfort food you can feel good about.
- Everyone loves it: Whether you eat plant-based, vegetarian, or meat, the texture and flavor win over every crowd.
What Makes This Plant Based Meat Sauce Different
This approach to plant-based “meat sauce” celebrates Mediterranean home cooking. Unlike recipes that rely on textured veggie protein, Beyond Beef, or Impossible meat, this sauce is ingredient-driven, whole-food, and rooted in the flavors of my Greek heritage.
Maria Koutsogiannia
Maria is the creator of FoodByMaria and your go-to Greek food expert for cozy, flavor-packed recipes. Inspired by her Mediterranean roots, she brings traditional Greek flavors, feel-good ingredients, and a whole lot of joy to everyday cooking.
Walnuts as a meat substitute: The fat content mimics ground beef, and browning them creates a toasty, rich flavor. Walnuts are a Mediterranean pantry staple, used in sauces, dips, and fillings across Greece, Turkey, and the Levant.
Mushrooms for umami: Cremini or button mushrooms deliver glutamate-rich, deep savory notes. They provide meaty texture and complex flavor while staying accessible and nutrient-dense.
Mediterranean technique: This recipe follows the Italian tradition of building a soffritto base with carrots, celery, and onions. The warming spices, cinnamon and clove, are a nod to Greek and Southern Italian cooking, adding subtle depth without sweetness.
For extra protein, baked tofu crumbles can be served on top.
Ingredients You’ll Need
The “meat” base:
- Walnuts – coarsely ground, rich in omega-3s and antioxidants. Pecans work if needed.
- Mushrooms – cremini or button recommended. They add umami, B vitamins, selenium, and fiber.
The soffritto:
- Onion, celery, carrots, garlic – processed to a pulp for a traditional Italian flavor base.
The sauce:
- Tomato paste – blooming it in the pot creates depth.
- Passata – look for Italian or Greek brands.
- Vegetable stock paste
- Balsamic vinegar – optional, adds acidity and complexity
The spice rack:
- Cinnamon and clove – a Greek/Southern Italian tradition in meat sauces
- Bay leaf, basil, parsley, chili flakes
This combination builds a plant based spaghetti sauce that tastes like it simmered for hours.
How to Choose the Best Spaghetti Noodles
Most dried spaghetti is made from semolina and water, naturally plant-based. Fresh pasta often contains eggs, so check the label. Any shape works in this recipe, penne, rigatoni, or gluten-free varieties all hold this chunky sauce beautifully.
Tips for the Best Walnut Mushroom Meat Sauce
Don’t over-process: Pulse walnuts and mushrooms separately in short bursts to get coarse crumbles, not nut butter.
Brown thoroughly: Cook until all liquid evaporates. This is where the meaty, roasted depth develops.
Bloom tomato paste: Push vegetables aside, drop paste on the hot pot surface, and darken for 60–90 seconds before stirring.
Deglaze the fond: Scrape browned bits off the pot with a splash of water for extra flavor.
Low and slow simmer: 25–30 minutes covered allows flavors to marry.
This process creates a rich, plant based spaghetti sauce that beats store-bought alternatives every time.
Easy Substitutions and Variations
- Nut-free: Use sunflower seeds or pepitas instead of walnuts.
- Mushroom-free: Double walnuts and add 1 tbsp soy sauce for umami.
- Gluten-free: Any GF pasta works. Brown rice spaghetti holds up well.
- Extra protein: Add drained lentils, chickpeas, or baked tofu crumbles.
- Add heat: More chili flakes or a fresh diced chili.
- Not strictly plant-based? Sprinkle parmesan or pecorino on top (Mediterranean cooking is flexible).
For more high-protein pasta options, try edamame pasta.
What to Serve with Plant Based Spaghetti
Pair this hearty spaghetti with:
- A simple Greek salad for crunch and freshness
- Warm focaccia bread for dipping
- Brussel sprout Caesar salad for a heartier side
- Garlic confit spread on bread or stirred into the sauce
How to Store and Reheat
Fridge: Sauce keeps 5 days in an airtight container; store pasta separately.
Freezer: Up to 3 months; thaw overnight in the fridge.
Reheat: Stovetop over medium-low with a splash of water or stock. Microwave works, but stovetop gives even results.
Make a double batch for meal prep. You can use this sauce on pasta, in wraps, over rice, or as a base for stuffed peppers.
Troubleshooting Common Issues
- Sauce too thin: Simmer uncovered 10–15 minutes.
- Sauce tastes flat: Add salt, or a splash of balsamic vinegar or soy sauce.
- Walnut mixture pasty: Over-processed. Pulse shorter next time, break up with a fork while browning.
- Mushrooms released too much water: Cook medium-high until liquid evaporates.
- Sauce bitter: Tomato paste wasn’t bloomed long enough or burned; aim for deep brick red.
FAQs
Walnuts and mushrooms processed into crumbles provide fat, protein, and deep umami flavor. Other options include lentils, TVP (textured vegetable protein), or store-bought plant-based ground.
Most dried spaghetti is naturally plant-based, made from wheat flour and water. Fresh pasta may contain eggs.
Add lentils or chickpeas, use high-protein pasta like chickpea or edamame, or top with baked tofu crumbles.
Yes, up to 3 months in airtight containers. Thaw overnight in the fridge and reheat on the stovetop.
Rich, savory, and deeply satisfying. Browning the walnut-mushroom mixture creates roasted depth, and cinnamon and clove add subtle Mediterranean warmth.
Yes. High in fiber, rich in omega-3s and antioxidants from walnuts, and packed with B vitamins and selenium from mushrooms. No processed ingredients or refined sugars.
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Ingredients
- 4 servings spaghetti or pasta of choice
- 4-5 cups assorted mushrooms, whole is fine as we will be processing them
- 1 heaping cup walnuts, raw, whole
- 2 tbsp. olive oil
- 1 large onion, rough chop
- 2 celery stalks , rough chop
- 3 medium-sized carrots, rough chop
- 4 large cloves of garlic, whole
- ½ tsp chili flakes
- 1 tsp cinnamon spice
- ½ tsp clove spice
- 2 tbsp. dry basil spice
- 1 tbsp. parsley spice
- 1 bay leaf
- ¼ cup tomato paste
- 1 680 ml bottle of passata – I used organic
- 2 tbsp. vegetable stock paste
- 2-3 cups boiling water
- season to taste
Instructions
Start Cooking- Into a food processor place 1/2 of the mushrooms and process until finely ground. Remove mushrooms from the processor and repeat with the other 1/2 of mushrooms. See notes.
- Into the food processor add your walnuts and process till finely ground. Transfer walnuts to the bowl with the mushrooms.
- Into a large soup pot add your olive oil and heat on medium-high heat for around 20 seconds before adding your mushroom and walnut mixture. Cook for around 6-8 minutes, stirring often to avoid burning. Cook until all the liquid has evaporated and the mixture has browned beautifully.
- Into the same food processor add your onion, celery, carrots and garlic. Process till finely ground. See notes.
- Remove the mushroom and walnut mixture from the pot and transfer to a bowl.
- Into the same pot add your onion mixture and cook on medium heat for around 5-6 minutes, or until browned and fragrant. If the mixture starts to sticks to the bottom of the pot simply add a little water bit by bit to help loosen the browned parts. This is a flavour building step, so I highly suggest it if needed.
- To the mixture add your chili flakes, cinnamon, clove, basil, parsley and bay leaf. Stir till well combined. Cook for around 1-2 more minutes.
- Now, push the cooked onions mixture to the sides and makes room for the tomato paste. Cook on its own for a minute or so or until browned. Once browned stir the tomato paste into the onion mixture and transfer your walnut and mushrooms to the pot. See notes.
- Stir till well combined, increase heat and add your passata and vegetable stock paste. Cook for around 5 minutes before adding your water and bringing mixture to a boil.
- Put on your pot lid and simmer for around 25-30 minutes. See notes. Before serving taste for salt and pepper and add as needed.
- Enjoy with your favourite pasta, garnished with parsley and a side of garlic toast!
281 people are discussing this recipe. Join in
Well worth the effort 🙂
YESS!! I don’t find it too time-consuming though, did you? I find this really easy unless I am just mad.
Another perfect recipe from Maria!
This is one for all the meat eaters too.
It’s truly amazing! Glad you love it too!
Is there another nut that could be used instead of walnuts? I am allergic to walnuts. This looks amazing. I do have cashews
I would try almonds! Pecans might work too! I don’t know if cashews are right for this one as they’ll get a bit too creamy!
Hands down the best vegan Bolognese sauce ever. Thank you Maria for this incredible recipe!
You’re so welcome, Anna! Thanks for taking the time to review this recipe!
Best sauce ever!! It is now on our supper rotation! My 7year old hates mushrooms so after he ate it I told him and he said “ I guess I like mushrooms now mom”😂 thanks for this amazing recipe, everything I try by you, Maria is a huge hit❤️
YESSSS!!!!!!!!!!! HE LOVES MUSHROOMS NOW, MOM!! THIS IS FREAKING AMAZING, I am so happy! Thank you Tanya for making my night!!
My jaw is still on the floor omg this was incredible I’ve seen so many people posting about your recipe so I thought ide give it a go instead of my usual lentil Bolognase and let me tell u about my lentil bolognese and any other bolognese recipe out there (ACTUAL TRASH) I will never make another recipe ever again , you’re a freaking genius my lill kids absolutely loved it thank u so much for all your hard work and your time
WOWOWOOWWOO what an incredible review! You are the absolute best, thank you so much!!!!!!
This is my favorite sauce ever. I already commented on this post but I realized I didn’t give you a rating. I would give it 100 stars, it’s so delicious.
Thank you so much for the love, hun!
Excellent recipe. I adapted it to my Thermomix and simplified it a little. It was perfect!
Yes, Caroline! Thanks so much for the love, this is amazing!
Absolutely phenomenal! I used an Italian seasoning blend I had on hand instead of straight basil and upped my bay leaves to 3 cause I love them! This recipe is golden..forever my go to spaghetti recipe!!
YESSS!!! What a huge compliment! Thanks so much for the love!
This recipe is gold. The mushrooms and walnuts stew hardly discernible, for picky palettes. My husband, who enjoys a meaty bolognese, devoured this. The only departure from recipe was leaving out cloves, because I didn’t have any, and it didn’t seem to be missing anything.
Maria- you are a genius! Thank you for giving me creative and delicious ways to eat vegan.
You are the best, Alexis, thank you! We are so grateful that you enjoyed this recipe.
Amazing, simple, delicious and hearty! Loved this recipe, used it in a lasagna and worked perfectly, even the kids demolished it!
Yes, this is amazing Jenny! thanks for sharing the love with the whole family x
Amazing sauce babe! I am so happy to be able to recreate your dishes with such easy. This is a simple but very nutritious and hearty ‘meat’ sauce that would satisfy anyone. I added a tiny bit of sugar as that’s what I always do to my tomatoe sauces.
Yes, that is a great addition! Thanks for letting me know. So glad you enjoyed this one love!