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The Farmstyle

by Kayla Zenner

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French Onion Grilled Cheese Sandwich

September 30, 2024 · In: Dinner, Lunch, Recipes

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This French onion grilled cheese is the ultimate grown up grilled cheese. With a layers of Gruyere Cheese and Creamy French Onions on top sourdough bread you will be making this on repeat.

French onion grilled cheese

Ingredients

  • Butter – for the french onions and grilling the sandwich
  • Onion – white onions are preferred, but yellow works
  • Seasoning – salt, pepper, garlic
  • Wine – while white wine is traditional in french onions, I love the flavor pack that a red such as Pinot Noir brings
  • Balsamic Vinegar – dark balsamic not white
  • Worcestershire – for the sauce
  • Sourdough Bread – can swap for your favorite bread but sourdough always hits home
  • Gruyere – the traditional cheese used for french onion soup, but swap for your favorite cheese

How to make french onion grilled cheese

  • In a skillet add butter. Once hot and melted, add the onions, salt and pepper. Allow them to cook over medium low heat until deeply caramelize for about 20 to 25 minutes, stirring frequently, until the onions become very dark, soft and jammy.
  • Add in the garlic, wine, balsamic, and Worcestershire. Allow the French onion sauce to simmer to 5 minutes until thickened.
  • Butter one side of each slice of bread. Add to a skillet over medium heat and layer shredded cheese, French onions, more shredded cheese, and another slice of bread with butter side facing up.
  • Cook until the bread has browned (about 2-4 minutes) and then flip.
  • You can cover the skillet with a lid or place into a preheated oven if you need help getting the cheese to melt.
French onion grilled cheese

I would love to hear about your experience making and enjoying my French Onion Grilled Cheese Sandwich! Feel free to tag me on Instagram or leave a review below. Your feedback helps me improve our recipes and provides inspiration to fellow home cooks.

Save this recipe for later by simply using the pin button on the recipe card or any of the photos above. Happy cooking!

French Onion Grilled Cheese

This French onion grilled cheese is the ultimate grown up grilled cheese. With a layers of Gruyere Cheese and Creamy French Onions on top sourdough bread you will be making this on repeat.
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Prep Time 10 minutes mins
Cook Time 30 minutes mins
Course dinner, Food, Main Course
Servings 2 sandwiches
Calories 910 kcal

Ingredients
  

French Onions

  • 2 tbsp butter
  • 1 large white onion thinly sliced
  • 1/2 tsp salt
  • 1/4 tsp pepper
  • 1 cloves garlic minced
  • 1/2 cup wine I used Résonance Pinot Noir
  • 1 tbsp balsamic vinegar
  • 1 tbsp Worcestershire sauce

Sandwich

  • 4 slices sourdough bread
  • 2 tbsp butter
  • 1 cup Gruyère cheese shredded

Instructions
 

  • In a skillet add butter. Once hot and melted, add the onions, salt and pepper. Allow them to cook over medium low heat until deeply caramelize for about 20 to 25 minutes, stirring frequently, until the onions become very dark, soft and jammy.
  • Add in the garlic, wine, balsamic, and Worcestershire. Allow the French onion sauce to simmer to 5 minutes until thickened.
  • Butter one side of each slice of bread. Add to a skillet over medium heat and layer shredded cheese, French onions, more shredded cheese, and another slice of bread with butter side facing up.
  • Cook until the bread has browned (about 2-4 minutes) and then flip.
  • You can cover the skillet with a lid or place into a preheated oven if you need help getting the cheese to melt.

Nutrition

Calories: 910kcalCarbohydrates: 77gProtein: 35gFat: 47gSaturated Fat: 28gPolyunsaturated Fat: 3gMonounsaturated Fat: 13gTrans Fat: 1gCholesterol: 133mgSodium: 2121mgPotassium: 436mgFiber: 4gSugar: 11gVitamin A: 1335IUVitamin C: 6mgCalcium: 773mgIron: 6mg
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By: Kayla · In: Dinner, Lunch, Recipes

About Kayla

Hi! I'm Kayla. I'm here to help inspire busy moms to get back in the kitchen and feel beautiful along the way! I'm married to my high school sweetheart and live on a farm with our two busy boys.

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