Easy Meatless Spaghetti

4.54 from 13 votes

This easy vegetarian recipe for meatless spaghetti is packed full of nutrients and uses whole wheat pasta for a healthy weeknight meatless meal! Use fresh garlic, onion, and mushrooms to make an irresistible meatless spaghetti.

loaded veggie meatless spaghetti

Meatless spaghetti is a staple in our house, and we make it at least every few weeks!

Pretty much everyone that tries it loves it.

You don’t need meat to make spaghetti taste delicious!

Growing up, I remember my mom making spaghetti a lot, at least once a week usually.

I loved pasta night, when we’d fill our plates with steaming hot pasta, yummy sauce, and drown it in Parmesan cheese.

Carbs for life!

I loved spaghetti then, and I love it now.

Not only is spaghetti a staple food, but it’s so affordable!

This is one of my go to meals for that reason.

mushrooms with garlic and onion

How to make Meatless Spaghetti

Cook your spaghetti according to package instructions.

While your spaghetti is cooking, chop up the garlic, onion, and mushrooms.

Add the veggies to a large skillet or jumbo cooker along with olive oil, basil, salt and pepper.

Cook over medium high heat, stirring often, until mushrooms release their liquid and it cooks off.

Add in your spaghetti sauce, and stir to heat through.

Serve topped with freshly grated parmesan cheese and red pepper flakes if you like a little heat!

You can buy blocks of parmesan cheese in your grocery store near the other cheeses.

I love grating it myself fresh as the flavor is just so much better than if you buy it already grated.

loaded veggie meatless spaghetti
These mushrooms cooked down a bit, but they were thick cut, so they had that nice “meaty” texture to them still.

Perfect for a meatless substitute!

I also use mushrooms in my vegetarian bolognese sauce.

I’m obsessed with mushrooms and use them in a lot of my recipes.

They are so versatile!

Mushrooms will always be one of my top favorite vegetables to cook with.

veggie meatless spaghetti
I love how economical spaghetti is.

We added some tomato sauce to our leftovers the next day, and we ended up eating this 3 times, so it made 6 meals for less than $15-20.

Now that’s a good deal!

Even if you add more veggies, it is still very affordable.

I sometimes throw in a bell pepper, or squash during the summer.

Whatever I have on hand!

This recipe is easily customizable and you can add in more veggies to your liking.

I also love that my toddler is basically guaranteed to eat it since it’s a form of pasta.

Less dinner time fighting is a win win.

It’s just as good the next day, and makes great leftovers!

veggie spaghetti
I like using whole wheat spaghetti noodles whenever I make it.

You really can’t taste the difference in my opinion and it’s much healthier than normal enriched spaghetti noodles.

One way to mix it up with the leftovers is to make baked spaghetti.

I mix the sauce together with the leftover spaghetti noodles, and place it in a 13 by 9 baking dish.

Stir in any shredded cheese (like mozzarella) you have on hand, or top with slices of provolone cheese (my favorite!)

Bake at 375 degrees for 20 – 30 minutes, until the cheese is melted and spaghetti is crisped on the edges.

Those crispy edges are my favorite part!

For more of our favorite meatless meals, be sure to check out 25 best vegetarian recipes.

meatless spaghetti
Top your spaghetti with freshly grated Parmesan cheese and enjoy!

I’m a little high maintenance, so I love having mine topped with freshly grated parmesan, powdered parmesan, and red pepper flakes.

It’s the magical trio!

So yummy.

Pasta night is the best.

More Meatless Pasta Recipes

Hungry for more? Here is some meatless pasta inspiration!

Are you making this recipe? I want to see! Don’t forget to tag me on instagram @buildyourbite and hashtag #buildyourbite with your recipe creations!

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easy meatless spaghetti sauce with whole wheat pasta - easy and healthy vegetarian dinner! #meatless #spaghetti #dinner #healthy #spaghettisauce

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Meatless Spaghetti Recipe

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4.54 from 13 votes

Easy Meatless Spaghetti

By: Joy Shull
This meatless spaghetti recipe is made with mushrooms and is perfect for an easy weeknight dinner!
Prep: 10 minutes
Cook: 15 minutes
Total: 25 minutes
Servings: 5


  • 16 oz sliced mushrooms
  • 1 medium yellow onion, diced
  • 6 cloves of garlic, minced or finely diced
  • 1 tablespoon of olive oil
  • 1 tablespoon dried basil
  • ½ teaspoon sea salt
  • ¼ teaspoon black pepper
  • 25 oz pasta sauce
  • 16 oz whole wheat spaghetti
  • Block of Parmesan cheese


  • Cook spaghetti according to package instructions, set aside
  • Combine mushrooms, onion, garlic, olive oil, basil, sea salt, and pepper in a large skillet.
  • Sautee on medium heat for 7-10 minutes, or until mushrooms have released and cooked away their liquid. If the liquid does not all evaporate, drain mixture in a strainer.
  • Add 25 oz jar of pasta sauce to mushroom mixture, stir well
  • Serve spaghetti topped with sauce and freshly grated Parmesan cheese!
  • Enjoy!


Serving: 1g, Calories: 241kcal, Carbohydrates: 41g, Protein: 9g, Fat: 7g, Saturated Fat: 1g, Polyunsaturated Fat: 4g, Cholesterol: 3mg, Sodium: 804mg, Fiber: 8g, Sugar: 10g
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Recipe Rating


  1. I scaled this recipe down to match what I had and ended up with really something like 2 servings. I also used dried mushrooms (reconstituted) and marinara sauce (not sure what pasta sauce means). It was great and I really enjoyed it. All out of beef! Thanks for the recipe. Note I also used whole wheat spaghetti pasta from my Philips Pasta machine (low on AP). It’s that kind of year right?

  2. This recipe was AWESOME! I stirred a 1/2 cup of pepper Jack cheese into the mixture, then sprinkled more of the pepper Jack cheese along with shredded sharp cheese/baked til cheese melted. Will serve with toasted bread/salad.

    1. So glad you enjoyed the recipe Shauna! I’m not sure about freezing the sauce, but I think it would work, since you would have cooked the mushrooms first. Let me know how it turns out!

    1. We mix the sauce and spaghetti together and reheat it. Usually we bake it in the oven and add some cheese. It works great!