Caramelized Onion and Mushroom Stuffed Butternut Squash #SundaySupper

Today is Sunday Suppers 2nd Birthday. Sunday Supper is the brain child of Isabel Reis Laessig. It was Isabel’s dream to inspire bloggers to help bring families back together at the dinner table. I joined this amazing group a year and a half ago and have loved being inspired by my other fellow bloggers. We were told to share our favourite memory of Sunday Supper today. Mine is bitter sweet in a way because my fondest memories of the last year and a half were the two times I was actually able to participate in the live twitter chat. Because of the time difference here in the UK I can’t participate in the twitter chats so the few times I have been able to participate have been so fun. These bloggers are so fun to hang out with. If you haven’t joined them yet on Sunday nights for the twitter chats you need to. Until I joined this group I had never really gotten into using twitter, I didn’t really get it. But joining this fabulous group of bloggers I discovered how fun twitter can be as a platform to talk to people all around the world. Hopefully I will be able to join in on more chats in the future but until then I just enjoy the fellowship I get with this community through our blogs.

Caramelized Onion and Mushroom Stuffed Butternut Squash

2 medium sweet onions, sliced
(10 oz) mushrooms, sliced
3 Tbsp olive oil and more as needed
(1/4 c.) balsamic vinegar
1 medium size butternut squash
olive oil for drizzling
handful of chopped walnuts *optional


Turn oven onto 180C (350F) Cut the butternut squash in half and place in a roasting tin cut side up and drizzle some olive oil over them, sprinkle with some freshly cracked salt and pepper. Put in oven for 40 minutes.

While the butternut squash is roasting in a large sauce pan heat the olive oil medium high heat. Add the onions and mushrooms. Once the onions/mushrooms begin to brown, turn the heat down to medium. Stir often to prevent burning and reduce the heat if needed. Allow the onions to caramelized to a beautiful tan/brown colour, this could take up to 30 minutes.

Once the onions have started to caramelise deglaze the pan with the vinegar, stir the pan to make sure you pick up any browning bits stuck to the pan. Remove from heat.

Take the squash out of the oven and scoop out the middle, being careful as it will be hot.

Chop up the squash innards and toss with caramelized onions and mushrooms. Season to taste with salt, pepper and possibly more balsamic vinegar.

Full the butternut squash shells with the mixture and top with chopped nuts. Put back in the oven for 10-15 minutes until nuts are toasted.

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Join the #SundaySupper conversation on twitter on Sunday! We tweet throughout the day and share recipes from all over the world. Our weekly chat starts at 7:00 pm ET. Follow the #SundaySupper hashtag and remember to include it in your tweets to join in the chat. Check out our #SundaySupper Pinterest board for more fabulous recipes and food photos.

Would you like to join the Sunday Supper Movement? It’s easy! You can sign up by clicking here: Sunday Supper Movement.

This entry was posted in #SundaySupper, Dinner For Two, Gluten-Free, Healthy Eating, Main Course, Vegan, Vegetarian Recipes and tagged , , , , . Bookmark the permalink.

28 Responses to Caramelized Onion and Mushroom Stuffed Butternut Squash #SundaySupper

  1. Stacy says:

    I love everything about this recipe, Laura! Lately we’ve been having roasted butternut pretty often but always as a side dish. I am pinning this on my Recipes to Try board because I think it deserves center stage the next time!

    I have yet to take part in a live Twitter chat because of the time difference but they always sounds like such fun. I must remedy that when I am home this summer!

  2. Liz says:

    Laura, so, so glad to have met you via SS! Your squash looks terrific….I think I could eat a bowlful of the filling alone :)

  3. Butternut squash is by far my favorite in the squash family. This recipe sounds amazing! I must try making it very soon.

  4. Laura… we loved it when you were able to join us on twitter! Thank you for being such a big part of this group all the way from the UK. Love your recipes, inspiration and most of all friendship!

  5. Renee says:

    We also wish you could join the the twitter chats more often. It’s been fun having you in the group and seeing your recipes and journey since you joined.

  6. Jennifer B says:

    Oooo yummy! I’m a new lover of butternut squash and have been looking for great recipes to utilize the veggie. Thanks!

  7. Katie says:

    This dish sounds absolutely spectacular! I am always looking for new ways to work butternut squash into my cooking. This flavor combo sounds killer!

  8. I love butternut squash! Your Caramelized Onion and Mushroom Stuffed Butternut Squash looks fabulous! I love how you prepared this one! Cheers to 2 years!

  9. We wish you could participate in the chats too! The times I don’t, I feel like I am missing out, but time differences are such a challenge! In any case, your recipe looks DELICIOUS! Happy Birthday! :)

  10. Katy says:

    That is one attractive stuffed butternut squash! I am definitely trying this! I know what you mean about the twitter chats, it is such a shame missing out on them because of the time difference but I love how well we all still manage to communicate.

  11. It is so wonderful to have people from all over the planet in #SS! So glad you are part of it.

    I have loved being a part of Sunday Supper, and cooking along with everyone each week.
    Cheers to another great year!

  12. Hezzi-D says:

    This looks like a healthy and delicious way to eat stuffed squash!

  13. Tara says:

    That looks crazy good, I need more butternut squash recipes!!!

  14. Shannon R says:

    Thanks so much for the great recipe and being part of SundaySupper!

  15. Love your recipes and all the fun posts you contribute on Sundays!

  16. I love butternut squash. Love everything about this recipe.

  17. YUM! Mrs. Stuntman loves caramelized onions!

  18. We do a lot of stuffed squash, and this one will be happening soon!

  19. I’m so sorry you can’t join us more often!! I don’t know much about twitter either but I’m slowly getting there. Squash is one of my most favorite side dishes thanks for sharing a different way of enjoying it!

  20. I felt the same about Twitter. I activated an account, deactivated, then activated it again. It’s not until I participated in a Twitter Chat that I finally “got” what Twitter was about!

    Love this hearty dish!

  21. What a delicious dinner idea. We don’t get those squash here but my mum told me that she found similiar in the market in europe, so next time I am there I ll be enjoying your stuffed squash. Thanks for sharing.

  22. I adore everything in this dish, it would be perfect for vegetarian/vegan holidays too

  23. Shaina says:

    Holy deliciousness I want this right now. You’ve got the perfect combination of ingredients…I love each and everything single thing in this dish

  24. Soni says:

    Love this recipe and love the caramelized onion mushroom combo!Trying it very soon :) Its been a pleasure cooking Sunday Suppers with you!

  25. This seems like such a great comforting meal. I love caramelized onions and mushrooms!

  26. Love this use of butternut squash! The Twitter chats always do seem like fun. I never participate because I actually am eating Sunday Supper with my family :)

  27. This sounds pretty amazing–this is definitely going on the menu for dinner soon!

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