Longhorn Steakhouse Mushroom Bisque

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October 12, 2014 by Stephanie Manley, Last Updated October 19, 2022 29 Comments

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The Longhorn Steakhouse menu is ever-changing and they are always coming up with amazing recipes. The fall menu occasionally features creamy mushroom bisque with truffle oil. This is one soup you don’t want to miss.

Longhorn Steakhouse Mushroom Bisque - CopyKat Recipes (1)

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Creamy Mushroom Bisque Soup

Mushroom bisque is a wonderful creamy soup that is perfect for fall. Longhorn Steakhouse Mushroom Bisque is made with two different types of mushrooms and a touch of truffle oil.

Truffle oil is a wonderful addition to so many mushroom dishes. Its earthy flavor naturally pairs with mushrooms.

This soup can easily be put together in very little time and it tastes like it was cooked for hours.

The layers of mushrooms in this soup are sublime. We are using three different mushroom flavors to make a robust mushroom bisque. I find that when you layer any type of mushroom soup with multiple types of mushrooms you get a full flavor that brings out the best possible flavor.

We are using baby portobello mushrooms and white button mushrooms for the base of the soup. We are also using a touch of truffle oil to help boost the flavor.

Mushroom Bisque Ingredients

Here’s a list of what you need:

Butter
White button mushrooms
Baby portobello mushrooms
White onion
Salt
Fresh garlic
Low sodium chicken broth
Heavy cream
Truffle oil

Truffle Oil Tips

Truffle oil is an ingredient that is a splurge. While it is a splurge, you don’t need to use very much of it to notice it in a recipe.

There are a lot of false truffle oils out there that have been flavored with a synthetic compound which is most often thioether (2,4-dithiapentane).

I personally like to buy truffle oil from a reputable retailer such as Costco or The Spice House. I do this because I feel they strive to provide real truffle oil.

How to Make Mushroom Bisque

Melt butter in a skillet over medium heat.
Add sliced mushrooms and chopped onion and sprinkle them with salt.
Cook until the onions are transparent and the mushrooms have released their water.
Add garlic and sauté for a couple of minutes.
Transfer the mushrooms and onions to a saucepan over medium heat.
Add chicken broth and heat through.
Use a stick blender or food processor to process the soup until the mushrooms are finely chopped.
Add heavy cream, stir, and heat the soup until it is warm.
Add truffle oil and serve immediately.

What to Serve with Mushroom Bisque

I find this soup goes well with some hot rolls. I really like Texas Roadhouse Rolls. These sweet yeast rolls complement the soup very well.

A simple garden salad is a good choice too.

More Longhorn Steakhouse Recipes

Parmesan Crusted Asparagus
Parmesan Crusted Chicken
Steakhouse Mac and Cheese

Popular Bisque and Soup Recipes

Autumn Squash Soup
Crab Bisque
Crawfish Bisque
Cream of Celery Soup
Cream of Mushroom Soup
Cream of Vegetable Soup
Old Fashioned Potato Soup
Pumpkin Curry Soup
Seafood Bisque
Senate Bean Soup
Tuscan Soup

Check out more of my easy soup recipes and the casual dining restaurant recipes here on CopyKat!

Mushroom bisque soup with truffle oil is so rich and flavorful.It's prfect for those who love mushrooms.

5 from 7 votes

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Course: Soup

Cuisine: French

Keyword: Longhorn Steakhouse, Mushroom Bisque

Prep Time: 10 minutes minutes

Cook Time: 20 minutes minutes

Total Time: 30 minutes minutes

Servings: 6

Calories: 206kcal

Author: Stephanie Manley

Ingredients

2 tablespoons butter
4 ounces white button mushrooms sliced
4 ounces baby portobello mushroom sliced
1/2 cup white onion chopped
1/2 teaspoon salt
1 teaspoon chopped garlic
2 cups low sodium chicken broth
1 cup heavy cream
1 1/2 teaspoons truffle oil

Instructions

Melt 2 tablespoons butter in a medium-sized skillet over medium heat.
Add sliced mushrooms and chopped onion.
Sprinkle salt on the mushrooms and onions.
Sauté until the onions have become transparent and the mushrooms have released their water.
Add chopped garlic and sauté for 1 to 2 minutes.
Transfer the mushrooms and onions to a medium-sized saucepan over medium heat.
Add chicken broth and heat through.
See Also
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Use either a stick blender or food processor to process the soup until the mushrooms are chopped very fine.
Add heavy cream and heat until the soup is warm.
Add truffle oil just before serving.
You may want to drizzle sour cream on the soup just before serving.

Nutrition

About Stephanie Manley

I recreate your favorite restaurant recipes, so you can prepare these dishes at home. I help you cook dinner, and serve up dishes you know your family will love. You can find most of the ingredients for all of the recipes in your local grocery store.

Stephanie is the author of CopyKat.com's Dining Out in the Home, and CopyKat.com's Dining Out in the Home 2.

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Reader Interactions

Comments

Jean
February 2, 2024 at 8:15 pm

I would give this mushroom soup recipe more than 5 stars if I could. I rarely rate or comment on recipes, but I have to on this one. I’ve never had this at Longhorn Steakhouse, but this is so good that I don’t even care to try theirs, even if it is thinner as some are saying. Good job Stephanie.
Reply
Trivin Dao
November 21, 2023 at 3:29 pm

This recipe was so accurate!! It was 99% the same soup I had at Longhorn, just a little less thick. Amazing recipe, totally reccomend!!
Reply
Michele
February 20, 2022 at 3:35 pm
This is delicious but I expected it to be thicker? What can be added to thicken it?
Reply
- Stephanie Manley
  February 20, 2022 at 4:14 pm
  You could cook it a little longer to reduce the amount of water in there, or you could add a cornstarch slurry, I would add 2 teaspoons of corn starch to 1 1/2 tablespoons of water mix well, and pour this into the soup. Then you would turn up the heat to medium-high and stir until it thickened.
  Reply
Michael J Papoi
March 12, 2018 at 8:32 am
Using the 2.4 ingredient does what to the taste of the soup? I’ve never uses truffle oil so I don’t know good from bad.
Reply
- Stephanie
  March 13, 2018 at 7:35 pm
  I am sorry I don’t quite understand the question.
  Reply
Baltisraul
September 15, 2017 at 11:09 am
Think I will answer your open ended question about favorite bisque. Mine is Squash Bisque. If you have a CopyKat for this I would love to give it a try. It is about that time of year!
Reply
See Also
The Best Lobster Bisque (Ruth's Chris Copycat Recipe)
- Stephanie
  September 16, 2017 at 4:40 am
  I hate to say this, but I often have bought squash in a can, and added some chicken stock, added some seasonings, like perhaps some salt, then curry, then I would let that reduce, then finish with a bit of heavy cream. I should try this some fresh vegetables.
  Reply
  - Baltisraul
    September 16, 2017 at 5:44 am
    Thanks Steph, going out and get a Butternut Squash this morning. The curry spice is what I needed to be reminded of. Forgot that is the key ingredient. Maybe even a dash of nutmeg too. Grilled chicken, Bisque and a day of college football. God is Good!!
Genie Gene
April 1, 2017 at 5:02 pm

This soup was fantastic! Next time, I’m going to use shallots instead of onions. So easy and just delicious. Thanks for sharing!
Reply
- Stephanie
  April 2, 2017 at 5:30 pm
  Oh, I bet that would be fantastic. That is a great suggestion!
  Reply
Rick Vail
March 28, 2016 at 11:17 am
Bad News. Costco now sells ‘truffle’ oil half the price of the old one, because there is no longer truffle in the bottle. It has been replaced by 2,4 dithiapentane.
Suggest consumers always check the ingredients. ‘Truffle flavor’ means chemical flavor.
Nice recipe, by the way.
Reply
Angela
December 2, 2015 at 12:14 am

I just made this. Amazing. I used truffle oil instead of butter to saute the mushrooms and onions. I also made a roux by adding a litter flour to the saute. I did not use a stick blender or any other blender to chop the mushrooms up. I personally love mushrooms. I say this is very much like what I had at Long Horn and I got a bowl to go I loved it so much. Thank you for sharing. This is added to my recipes now.
Reply
kalynskitchen
November 1, 2014 at 6:48 am
Happy Saturday! Just letting you know I featured this recipe in my monthly round-up of 25 Deliciously Healthy Low-Carb Recipes from October 2015. Hope a lot of my readers will come over here and try it!
Reply
- Stephanie Manley
  November 2, 2014 at 4:15 pm
  Awesome! Thank you for the inclusion!
  Reply
Pammyk
October 26, 2014 at 2:05 pm
I just made this and it didn’t taste anything like what I had at Longhorn Steak. Very disappointing
Reply
Melanie Bauer
October 13, 2014 at 11:18 am
This sounds delicious, Stephanie!
Reply
- stephaniemanley
  October 13, 2014 at 7:05 pm
  Thank you very much!
  Reply
CrunchyCreamySw
October 13, 2014 at 10:24 am
This bisque looks fabulous! Love it!
Reply
- stephaniemanley
  October 13, 2014 at 7:06 pm
  Thank you! What’s your favorite type of bisque?
  Reply
Amanda
October 13, 2014 at 8:42 am
Yum. I haven’t been to Longhorn Steakhouse in ages (in fact, I’ve only even been once). I am really missing out though. This mushroom truffle bisque sounds amazing. I will definitely be trying this one out soon
Reply
- Stephanie Manley
  January 7, 2015 at 7:17 pm
  Thank you very much.
  Reply
Christime
October 12, 2014 at 5:24 pm
Which truffle oil do you use. White or black
Reply
- stephaniemanley
  October 12, 2014 at 5:45 pm
  I used black truffle oil.
  Reply
kalynskitchen
October 12, 2014 at 12:46 pm
This sounds amazing!
Reply
- stephaniemanley
  October 12, 2014 at 5:45 pm
  Thank you very much.
  Reply
  - stephaniemanley
    October 12, 2014 at 5:45 pm
    Great tip. I will give it a try.
Debra Peters
October 12, 2014 at 10:06 am
Thank you for sharing these wonderful recipes!
Reply
- stephaniemanley
  October 12, 2014 at 6:04 pm
  I am happy to hear you enjoy the recipes.
  Reply