Crowded Kitchen

MENUMENU
  • Recipes
  • About Us
  • Contact
  • Sign Up
menu icon
go to homepage
subscribe
search icon
Homepage link
  • About Us
  • Recipe Index
  • Contact
×
Home » Recipes » Squash and Pumpkin

Pesto Spaghetti Squash Boats with Mushrooms

Published: Oct 20, 2020 by Lexi

157 shares
Jump to Recipe·Print Recipe

These comforting, delicious vegan spaghetti squash boats are packed with pesto, a mushroom, tomato and white bean filling and topped with vegan cheese and crispy breadcrumbs. The ultimate comfort food with fewer carbs and plenty of vegetables!

close up side view of spaghetti squash filled with pesto, white beans and topped with breadcrumbs.

How to prep spaghetti squash

Spaghetti squash can be a pain to prep due to their thick outer skin. To prevent injury (and make your life easier!), we recommend following these steps.

Microwave

close up side view of whole spaghetti squash with fork marks.

When we first tried this recipe, I found that it was impossible to slice into the squash without first softening it. Luckily, the microwave makes this a speedy and easy process, while also partly cooking the flesh (which means shorter overall cook time).

Start by washing the outside of the squash and patting dry. Use a fork to make indentations all over the squash (this allows steam to get in to the squash, cooking it faster).

Wrap the squash in a damp paper towel (not too wet). Microwave on high for 5 minutes, then carefully remove and let cool slightly before handling.

Slice and remove seeds

  • overhead view of spaghetti squash sliced in half on marble surface.
  • side view of scooping seeds out of spaghetti squash.

Not that the squash has been partially cooked, it should be much easier to slice! Use a sharp knife to slice the squash in half lengthwise. Be careful – it may be pretty hot from the steam.

Next, use a large spoon to scoop out the seeds. You can either roast the seeds or discard.

Roast

Lastly, brush the squash generously with olive oil and season with salt and pepper. We use a pastry or grill brush to evenly distribute the oil.

Place the squash face side down on a baking sheet. This prevents the squash from drying out and also helps it cook faster!

Since the squash has already been pre-cooked in the microwave, it only takes about 20 minutes in the oven. When it's fork tender, it's ready to go.

Shred

side view of two forks in a cooked, shredded spaghetti squash.

Once the squash is tender, you can use two forks to "shred" the squash. Now you'll see why it's called spaghetti squash...it looks just like pasta!

In this recipe, we recommend leaving about a half inch of squash on each side and the bottom, but you can remove the rest of the filling and mix it in with the rest of the vegetables so it takes on more flavor.

More filling ideas

We love pesto and vegetables as the filling in these spaghetti squash, but the possibilities are endless! Here are a few more ideas for filling:

  • Homemade Lentil Meatballs and Tomato Sauce
  • Lentil Walnut Taco "Meat"
  • Mediterranean Quinoa with pine nuts, sun dried tomatoes and kalamata olives
  • If you're not vegan, you can also add a protein like shredded rotisserie chicken or ground beef.

Assembly

  • spaghetti squash with pesto spread on bottom.
    Spread pesto on bottom of squash
  • Four spaghetti squash filled with white beans, mushrooms and tomatoes.
    Fill with white bean/mushroom filling
  • close up of spaghetti squash with mushroom filling and pesto on top.
    Spread more pesto on top
  • spaghetti squash topped with cheese and breadcrumbs.
    Top with vegan cheese and breadcrumbs

While the spaghetti squash is roasting, prep the filling. Both the pesto and the filling are easy to make, but if you'd prefer to use store-bought pesto to make things easier, go for it.

To make the pesto, simply add all ingredients to a food processor or blender and pulse until smooth. To thicken the pesto and add a bit more heft, we also add in some vegan ricotta. However, this is optional and you can also just use the pesto!

Meanwhile, in a separate pan, get the onions sautéing in some olive oil. Once soft, add in the mushrooms, tomatoes, parsley, salt and pepper. Once the mushrooms and tomatoes cook down, stir in the white beans and some of the shredded spaghetti squash.

To assemble the boats: Start by spreading a thin layer of pesto on the bottom of each squash. This way, you get plenty of flavor in every bite, even when you get to the bottom!

Next, add in the vegetable/white bean filling. Top with another thin layer of pesto, then finish off each boat with a generous handful of shredded vegan cheese and breadcrumbs.

We find that the breadcrumbs on top help the vegan cheese get nice and melty in the oven. After about 10 minutes in the oven, the breadcrumbs will be toasty, crunchy and so delicious! You can leave them off if desired, but the textural contrast made these perfect.

side view of pesto spaghetti squash boat with cheese and breadcrumbs with fork.

More vegan weeknight dinner recipes you'll love:

  • Tofu Marsala
  • Quinoa Stuffed Zucchini Boats
  • Pasta Primavera
  • Thai Peanut Quinoa Salad
  • Greek Chickpea Salad
overhead view of spaghetti squash filled with pesto, white beans and topped with breadcrumbs.

If you make these vegan pesto spaghetti squash boats, we’d love for you to leave a comment and rating below! We also love to see your creations on Instagram – tag us at @crowded_kitchen so we can see what you’ve been cooking.

Print

📖 Recipe

clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
close up side view of spaghetti squash filled with pesto, white beans and topped with breadcrumbs.

Pesto Spaghetti Squash Boats with Mushrooms


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 1 review

  • Author: Lexi
  • Total Time: 50 minutes
  • Yield: 4 servings
  • Diet: Vegan
Print Recipe
Pin Recipe

Description

These comforting, delicious vegan spaghetti squash boats are packed with pesto, a mushroom, tomato and white bean filling and topped with vegan cheese and crispy breadcrumbs. 


Ingredients

  • 2 spaghetti squash (smaller is better)
  • 1 ½ tbsp olive oil
  • 1 yellow onion, diced
  • 2 cups sliced mushrooms
  • 1 ½ cup whole cherry tomatoes
  • ¼ cup chopped fresh parsley
  • ¾ tsp fine grain kosher salt
  • ¼ tsp ground black pepper
  • 1 14oz can cannellini beans, drained and rinsed

Kale Pesto with Ricotta:

  • ¼ cup walnut pieces
  • 1 clove of garlic
  • 1 cup well packed baby kale (or spinach)
  • ¼ cup fresh basil
  • 1 tbsp freshly squeezed lemon juice
  • 1 tbsp nutritional yeast
  • ½ tsp lemon zest
  • 3 tbsp extra-virgin olive oil (more for a smoother pesto)
  • ¼ tsp fine grain kosher salt, more to taste
  • ⅛ tsp freshly ground black pepper
  • ⅓ cup vegan ricotta cheese

For topping:

  • Shredded vegan mozzarella cheese
  • ½ cup Italian style breadcrumbs
  • 1 tbsp melted vegan butter


Instructions

  1. Preheat oven to 375˚F.
  2. Wash spaghetti squash, then pierce with a fork in several places. Wrap in a damp paper towel and microwave each squash (separately) for 5 minutes. Remove from microwave and let cool slightly. Slice each squash in half lengthwise. Use a spoon to remove the seeds. Brush each squash with a bit of olive oil and salt. Set face side down on a baking sheet and roast for 20 minutes.
  3. Meanwhile, add all pesto ingredients except olive oil to a food processor. Pulse until everything is well combined, then slowly stream in the oil while blending until you reach desired consistency. Add in the ricotta and pulse until combined. 
  4. In a skillet, heat olive oil and add onion. Sauté for 5-7 minutes, then add in mushrooms, tomatoes, parsley, salt and pepper. Sauté for 8-10 minutes, until the mushrooms and tomatoes are softened and cooked down.
  5. Remove the spaghetti squash from the oven. Carefully flip and use two forks to shred the squash. Remove most of the spaghetti squash shreds, leaving about ½" border on each side. Add the shredded squash to the mushroom mixture along with the white beans and stir well. 
  6. Melt butter and stir well with breadcrumbs.
  7. To assemble: spread the bottom of each squash with a thin layer of pesto. Next, fill each boat almost to the top with mushroom/white bean filling. Top with more pesto, then top with shredded vegan cheese and breadcrumbs.
  8. Return to oven for 9-11 minutes, until the breadcrumbs are crispy and browned and the cheese is melty. Enjoy!

Notes

Feel free to use store-bought pesto to make this quicker. 

  • Prep Time: 20 minutes
  • Cook Time: 30 minutes
  • Category: Dinner
  • Method: Oven
  • Cuisine: American

Nutrition

  • Serving Size: 1 Boat
  • Calories: 345
  • Sugar: 5.9 g
  • Sodium: 955 mg
  • Fat: 18.9 g
  • Saturated Fat: 3.9 g
  • Trans Fat: 0 g
  • Carbohydrates: 34.6 g
  • Fiber: 8.2 g
  • Protein: 13.8 g
  • Cholesterol: 10.5 mg

Did you make this recipe?

Tag @crowded_kitchen on Instagram and hashtag it #crowdedkitchen

More Squash and Pumpkin Recipes

  • Overhead view of pumpkin orzo on a beige plate with fork on side.
    Pumpkin Orzo
  • Overhead view of finished leek and squash quiche cut into slices.
    Leek and Squash Quiche
  • Close up of the finished air fryer butternut squash.
    Air Fryer Butternut Squash
  • Close up of the finished pumpkin sweet potato soup in a bowl topped with nuts.
    Pumpkin Sweet Potato Soup

Comments

    Let us know what you think! Cancel reply

    Your email address will not be published. Required fields are marked *

    Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star

  1. Leslie says

    October 28, 2020 at 8:53 pm

    Delicious- as all meals from this blog are! I made it for the first time tonight and didn’t have all the ingredients, so I used store bought pesto from Aldi (not vegan- but tasty). I can’t wait to try the recipe again when I have all the accurate ingredients. Thank you for sharing!

    Reply
Lexi and Beth toasting with wine.

Hi, we're Lexi and Beth, a mother-daughter team from Michigan. The recipes you'll find here are a reflection of how we bring our family together around the dinner table despite various dietary differences.

More about us →

Seasonal

  • close up overhead view of vegan bean soup in a bowl on white linen surface.
    Three-Bean Vegetable Soup
  • Front view of strawberry pop tart.
    Homemade Strawberry Pop Tarts
  • Overhead view of slice and bake cookies on a pink plate.
    Slice and Bake Heart Cookies
  • close up view of a passion fruit martini in a glass with dark backdrop.
    Passion Fruit Martini

Popular

  • Overhead view of fruit and nut crackers on a plate.
    Gourmet Fruit and Nut Crackers
  • overhead view of vegan mac and cheese in pot
    The Best Vegan Mac and Cheese
  • Overhead view of hot honey chicken plate.
    Hot Honey Chicken Plate (Sweetgreen Dupe)
  • Overhead view of potato leek soup.
    Super Green Sheet Pan Soup

See more-->

Footer

Back to top ↑

About

  • Learn About Us
  • Privacy Policy
  • Accessibility Statement
  • Affiliate Disclosure
  • See our Portfolio

Newsletter

  • Sign up for weekly emails and updates

Contact

  • Contact Us
  • Work With Us
  • As Seen In

Copyright © 2025 Crowded Kitchen