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    Foody Schmoody Blog Recipes For Everyone » Main Course / Meals » Sandwich

    Published: Apr 3, 2015 · Modified: Aug 1, 2022 by foodyschmoody ·

    Caramelized Onion Grilled Cheese With Mushrooms

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    This recipe for Caramelized Onion Grilled Cheese was originally created as part of a paid collaboration. Paid links have since been removed.

    This gourmet grilled cheese requires a little prep work but is easy to assemble. Much like any grilled cheese sandwich, you can change up the bread type and the cheese type to make it your own.

    Jump to Recipe - Print Recipe
    grilled cheese sandwich sliced in half diagonally and stacked on a white plate. There is cheese and bread in the background.

    Ingredients

    • Bread - Make sure it's a good sturdy bread to hold up to the ingredients
    • Cheese - Gouda
    • Vegetables - Mushrooms, Onions, Spinach or Arugula
    • Condiments - Butter, Olive oil, Balsamic Vinegar, Salt & Pepper

    Top Tip

    Prepare the caramelized onions & mushrooms ahead of time. They can be stored in the refrigerator until ready to use.

    Related: How To Make Caramelized Onions

    Variations

    This hearty grilled cheese sandwich is pretty much perfection as I've prepared it but if you don't have the ingredients or you'd like to change it up, here are some suggestions.

    • Cheese suggestions for grilled cheese - Gruyere, Fontina, White Cheddar, Mozzarella
    • Bread alternatives - Scali bread, ciabatta rolls, sourdough, peasant bread
    grilled cheese cut in half with onions, mushrooms and spinach hanging out. The sandwich is on a white plate.

    What to serve with grilled cheese

    • Sweet Potato Cubes
    • Soups
    • French Fries
    • Salad

    Love cheesy sandwiches? Visit this 21 Cheesy Stuffed Burgers collection!

    cooked grilled cheese, cut in half, each half stacked on each other on a white plate

    Caramelized Onion and Mushroom Grilled Cheese

    foodyschmoody
    A grown-up grilled cheese featuring caramelized onions, mushrooms and cheese served on a hearty bread. A tasty grilled sandwich for lunch or dinner.
    5 from 1 vote
    Print Recipe Pin Recipe
    Prep Time 20 mins
    Cook Time 5 mins
    Total Time 25 mins
    Course lunch, Main Course
    Cuisine American
    Servings 2 sandwiches
    Calories 695 kcal

    Ingredients
      

    • 1 Tablespoon butter
    • 1 Tablespoon olive oil
    • 2 Large sweet onions sliced thinly
    • 4 Ounces baby bella mushrooms sliced
    • 1½ Teaspoon balsamic vinegar
    • ÂĽ Teaspoon salt
    • â…› Teaspoon black pepper freshly cracked
    • 4 Ounces or 4 slices Gouda
    • 1½ Cup spinach or spinach/arugula blend
    • 2 Tablespoon butter softened
    • 4 Slices bread Thick, seeded slices work great

    Instructions
     

    • Melt butter in a large non stick skillet with olive oil, over high heat. Add onions and mushrooms and cook 3-4 minutes. After 3-4 minutes, knock the heat down to medium low and let them cook about 15 minutes, only stirring two or three times during this time. After 15 minutes the onions should be softened and gaining caramelization. Stir in the balsamic vinegar, salt and pepper. Cook 5 minutes more. Set aside until ready to use.
    • Spread the softened butter on one side of each slice of bread.
    • Place two buttered slices of bread, butter side down on a cutting board or wax paper to assemble. Layer ingredients on bread in this order:
      1 oz (or 1 slice) Gouda, onions & mushrooms, half the spinach, another slice or ounce of Gouda. Top with bread, butter side up.
    • Heat non stick skillet over medium/high heat. Add sandwiches, one at a time to skillet. Cook on each side 3-4 minutes, until bread is toasty and cheese is melted.
    • Serve immediately.

    Nutrition

    Calories: 695kcalCarbohydrates: 57gProtein: 25gFat: 43gSaturated Fat: 22gPolyunsaturated Fat: 3gMonounsaturated Fat: 14gTrans Fat: 1gCholesterol: 110mgSodium: 1204mgPotassium: 932mgFiber: 6gSugar: 23gVitamin A: 2959IUVitamin C: 22mgCalcium: 572mgIron: 4mg
    Keyword grilled cheese, grilled sandwich, sandwich, vegetarian
    Tried this recipe?Let us know how it was!

     

    More Sandwich

    • 40 Best Grilled Cheese Recipes
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    • Grilled Cheese Roll Ups With Turkey
    • French Onion Burger

    Reader Interactions

    Comments

    1. Katie says

      April 03, 2015 at 7:34 am

      Oh my goodness - now this sounds like an epic sandwich, indeed!!!

      Reply
      • foodyschmoody says

        April 03, 2015 at 9:38 am

        Thanks!

        Reply
    2. Melanie says

      April 03, 2015 at 8:39 pm

      I usually just eat regular old grilled cheese!

      Reply
    3. Michelle @ The Complete Savorist says

      April 04, 2015 at 11:57 pm

      Oh dear me, I am seeing all sorts of hearts and stars over this recipe.

      Reply
      • foodyschmoody says

        April 05, 2015 at 7:37 am

        Ha, thanks Michelle! I'm a sucker for Grilled Cheese and I'm loving coming up w/ new combos for National Grilled Cheese Month!

        Reply
    4. Emily says

      April 05, 2015 at 8:53 am

      oh wow, I love those onions!! So good! loving #grilledcheesemonth Pinned it!

      Reply
    5. Cathy Mini says

      April 05, 2015 at 4:20 pm

      This grilled cheese spin sounds amazing! I will try anything with caramelized onions in it that is for sure!

      Reply
    6. Becky Fry (mysparklinglife.com) says

      April 06, 2015 at 9:16 am

      OMG! That sandwich looks so good! I love adding spinach to my grilled cheese too! 🙂

      Reply
      • foodyschmoody says

        April 06, 2015 at 1:50 pm

        Thanks. Adding spinach is a good way to feel less guilty about all that ooey gooey cheese!

        Reply
    7. Vicki Mattingly says

      April 06, 2015 at 12:27 pm

      That looks so amazingly yummy!

      Reply
      • foodyschmoody says

        April 06, 2015 at 1:49 pm

        Thank you!

        Reply
    8. Jillian (Food, Folks and Fun) says

      April 08, 2015 at 2:01 am

      That grilled cheese looks amazing!

      Reply

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