START A PETITION 27,000,000 members: the world's largest community for good

Portobello and Leek Gratin (Recipe)

Portobello and Leek Gratin (Recipe)


This hearty entree will satisfy both vegetarians and meat eaters alike.

Mushroom and Leek Gratin.


  • 4 Tablespoons olive oil, divided
  • 2 Pounds Portobello mushrooms (about 6-8 large), stemmed & sliced 1/2-inch thick
  • 2 Large Leeks, white and light green parts only, washed well, cut in half crosswise, then into 1/4-inch thick slices
  • Coarse salt and freshly ground pepper
  • 1/4 Cup dry white wine
  • 3/4 Cup heavy cream
  • 2 Tablespoons freshly-squeezed lemon juice
  • 1 Tablespoon fresh thyme
  • 1/4 Cup finely grated parmesan or pecorino (about 1 ounce)

Baking Dish: 2-quart.

1. Preheat oven to 375 degrees.
2. Place 2 tablespoons oil in a large skillet (the biggest one you have) and turn heat to medium-high. Add mushrooms to skillet and cook for 10-15 minutes, tossing occasionally until soft. If you can’t fit them all in one skillet, work in batches. Place softened mushrooms on a plate lined with paper towels.
3. Carefully clean up any residue in the skillet, and then add remaining 2 tablespoons oil. Turn the heat back to medium-high, stir in leeks, season with salt and pepper, and cook. Stir frequently until the leeks have softened, just about 8 minutes. Stir in wine and continue cooking until the liquid is nearly evaporated, 2-3 more minutes. Add heavy cream, lemon juice and thyme.
4. Add leek mixture in an even layer to the baking dish. Arrange mushrooms over leek mixture, just slightly overlapping. Top with parmesan.
5. Bake for 20-25 minutes, or until the edges are bubbly.

Recipe Adapted From: Martha Stewart.

Earlier: Cozy French Onion Soup

Read more: All recipes, Basics, Entrees, Food, Side Dishes, Vegetarian, , , , ,

have you shared this story yet?

go ahead, give it a little love

Katie Waldeck

Katie is a freelance writer focused on pets, food and women’s issues. A Chicago native and longtime resident of the Pacific Northwest, Katie now lives in Oakland, California.


+ add your own
1:46PM PST on Feb 18, 2014

Oh my goodness, this sounds divine. It's going on my menu plan for next week. :)

3:04PM PST on Jan 27, 2014

Love portobello mushrooms!

9:15PM PST on Jan 17, 2014

yummy, thanks for sharing the recipe

4:30AM PST on Jan 17, 2014

Thank you Katie, for Sharing this!

1:13AM PST on Jan 17, 2014

Sounds like a very nice tasty recipe and mushrooms are a good substitute for meat. So this is going to get a go in my kitchen soon. Sounds like a yummy winner. Thank you.
✰♥ *★*♥Love*★* ♥° ★love★ °♥*★ *love ♥*★* ♥✰
★*♥*☻*Love & Peace go with you always.*☻*♥*★
✰♥•★•* ♥°*♥✰•˚★*ღ♥•★✰★•♥ღ*˚★•✰♥*° ♥ *•★•♥✰
✰♥ღ♥Ƹ̵̡Ӝ̵̨̄Ʒ ღ★ ♥ *☻ღ♥Ƹ̵̡Ӝ̵̨̄Ʒ♥ღ☻*♥ ★ღƸ̵̡Ӝ̵̨̄Ʒ ♥ღ♥✰

2:18PM PST on Jan 16, 2014

I like to try this delicious recepe!!

10:01AM PST on Jan 16, 2014

thank you

9:11AM PST on Jan 16, 2014

Thanks. sounds good.

8:24AM PST on Jan 16, 2014

Sounds so good. Mushrooms are so very good for you!

1:09AM PST on Jan 16, 2014

Thank you :)

add your comment

Disclaimer: The views expressed above are solely those of the author and may not reflect those of
Care2, Inc., its employees or advertisers.

people are talking

Greetings to every one that is reading this I have been rejected by my husband after three(3) years …

I've had gout since I was in my 20s, and my mother had it too so I suspect it's genetic. I've known…

Good to be 'in the quiet',, sometime in your day.... Brings solace/peace,, especially at night, …

Good recommendations, especially the reminder that the smartphone does work in a pinch. Thanks.


Select names from your address book   |   Help

We hate spam. We do not sell or share the email addresses you provide.