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    Home » Recipes » Slow Cooker Recipes » Casserole Recipes » Slow Cooker Fresh Herb Chicken Mushroom Leek Casserole

    Published: Apr 30, 2015 · Modified: Feb 22, 2022 by Jennifer · This post may contain affiliate links

    Slow Cooker Fresh Herb Chicken Mushroom Leek Casserole

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    gold plate filled with chicken casserole with knife on side; green bowl with salad mix and bunch of fresh herbs in background Fresh filling food that will feed a crowd? This recipe! Chicken, stuffing and loads of homemade creamy sauce with plenty of mushrooms and leeks tucked in there for even more flavor. And don't forget a huge handful of your favorite freshly chopped herbs to take the flavors over the top.

    overhead view of chicken casserole on gold plate with knife on sideI kind of consider this to be a spring comfort food. All the freshness you want but plenty filling for all your hungriest eaters.

    white slow cooker casserole filled with chicken casserole; hand with wooden spoon in casseroleThis was a perfect fit for my casserole crock but you could make it in any 4 quart or larger slow cooker.

    overhead view of chicken casserole on gold plate with knife on sideGet this casserole thrown together in your slow cooker and get your family gathered around the table for dinner!

    gold plate filled with chicken casserole with knife on side; green bowl with salad mix and bunch of fresh herbs in background

    Slow Cooker Fresh Herb Chicken Casserole

    Slow Cooker Fresh Herb Chicken Mushroom Leek Casserole

    Jennifer Draper
    Fresh filling food that will feed a crowd? This Slow Cooker Fresh Herb Chicken Mushroom Leek Casserole! Chicken, stuffing and loads of homemade creamy sauce with plenty of mushrooms and leeks tucked in there for even more flavor.
    3.59 from 17 votes
    Print Recipe Pin Recipe
    Prep Time 25 mins
    Cook Time 4 hrs
    Total Time 4 hrs 25 mins
    Course Main Course
    Cuisine American
    Servings 8 servings
    Calories 496 kcal

    Ingredients
      

    • 1 ½ pounds boneless skinless chicken thighs (cut into large bite sized pieces)
    • 2 tablespoons butter
    • 1 tablespoon olive oil
    • ¼ pound leeks, washed well and sliced (about three leeks)
    • 8 oz mushrooms halved
    • ½ small onion diced
    • 2 cloves garlic minced
    • 2 tablespoons flour
    • 1 tablespoon lemon juice
    • 1 cup chicken broth
    • 1 cup heavy cream
    • 14 oz bag cubed country style stuffing mix or homemade cubed bread crumbs if preferred
    • ½ cup fresh shredded Parmesan cheese
    • ½ cup fresh chopped herbs (I used rosemary, sage, thyme and parsley)

    Instructions
     

    • Heat butter and olive oil in skillet over medium high heat
    • Add chicken and cook 3-4 minutes on each side until lightly browned
    • Remove from pan and set aside
    • Add onions to skillet and saute for 2-3 minutes until they start to soften
    • Add mushrooms and leeks and continue to saute until slightly softened, about 4-5 minutes
    • Add minced garlic and saute for an additional 1-2 minutes
    • Sprinkle veggies with flour and stir to coat
    • Slowly stir in lemon juice, broth and then cream and chicken and let simmer for 2-3 minutes
    • Remove from heat
    • Stir in stuffing, half of the cheese and fresh chopped herbs
    • Transfer to slow cooker that has been sprayed with nonstick spray
    • Top with remaining cheese
    • Cook on high for 2-3 hours or low for 4-6 until chicken is fully cooked

    Nutrition

    Calories: 496kcalCarbohydrates: 45gProtein: 26gFat: 22gSaturated Fat: 11gCholesterol: 133mgSodium: 923mgPotassium: 523mgFiber: 2gSugar: 5gVitamin A: 875IUVitamin C: 4.9mgCalcium: 180mgIron: 3.7mg
    Tried this recipe?Mention @slowcookergourmet or tag #slowcookergourmet!
    Important nutritional disclaimer

    gold plate filled with chicken casserole with knife on side; green bowl with salad mix and bunch of fresh herbs in background

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    Comments

    1. Cassie says

      July 31, 2017 at 4:36 pm

      Can you make this as a freezer meal?

      Reply
      • Jennifer says

        August 05, 2017 at 9:05 pm

        yes, but here's how I would do it for best results. Skip pre-cooking/browning and assemble everything except the stuffing and fresh herbs in a freezer bag. When ready to cook, thaw and add freezer bag to slow cooker and stir in stuffing at that time. It won't get quite the same flavor as if you had browned it, but it will be a great time saver and will still be delicious!

        Reply
    2. TulsaJayhawk says

      January 24, 2017 at 5:11 pm

      It looks great, but I can't find a way to print just the recipe.

      Reply
      • Jennifer says

        January 25, 2017 at 7:11 am

        There is a print button right underneath the small picture in the recipe. I can be a little tricky to see on certain screens. If you can't get it let me know.

        Reply
    3. Lindsay says

      November 11, 2016 at 10:30 am

      5 stars
      This was the first recipe I tried in my new casserole crock-pot and it was a big hit with my husband and 13 month old son! Can't wait to try your other recipes. Thank you! 🙂

      Reply
      • Jennifer says

        November 11, 2016 at 8:24 pm

        Yay!! Let me know what else you end up trying out!

        Reply
    4. Larcher says

      May 29, 2016 at 3:39 pm

      5 stars
      Made this for dinner tonight, using leeks and fresh herbs from my garden. I used sour dough bread for the stuffing and cooked it on high for 3 hours. Super! Everyone loved it! It was over 30 degrees outside so it was nice to use my new casserole crock pot!

      Reply
      • Amy @ Slow Cooker Gourmet says

        May 30, 2016 at 11:49 am

        Garden fresh herbs and veggies are wonderful! So glad you enjoyed it!

        Reply

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    Hi, I'm Jennifer! I love creating fresh recipes that are quick and simple to make so that I can help you get dinner on the table without the fuss!

    More about me →

    Most Popular Recipes

    • The Best Slow Cooker Pulled Pork
    • Slow Cooker Buffalo Chicken Chili
    • Slow Cooker Cheesy Buffalo Chicken Pasta
    • Slow Cooker Butter Chicken

    As seen on...

    Simple Seasoning Blends

    Make these simple homemade seasoning blends using spices you probably have on hand! Use their amazing flavors in many of my delicious and easy recipes!

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