Go Back
+ servings
A photo of triple decker grilled cheese with caramelized onions

Triple Decker Caramelized Onion Grilled Cheese

Grilled cheese with caramelized onions and gruyere might be the most comforting food known to earth. Hearty, delicious and so fun. And, now that you know the triple decker technique, you can make all your grilled cheeses this way!
Prep Time 5 minutes
Cook Time 15 minutes
Caramelized Onion Cook time 1 hour
Course Brunch, Lunch, Main Course, sandwich
Cuisine American
Servings 1 sandwich
Calories 804 kcal

Ingredients
  

  • 3 slices white bread
  • 3 tablespoon mayonnaise
  • ½ C gruyere cheese grated
  • ½ C caramelized onions

Instructions
 

  • Preheat a non-stick frying pan to medium low heat.
  • Spread mayo over one side of each slice of bread. Building on the dry side, layer cheese, onions, and more cheese. Top with second slice of bread, mayo facing out.
  • Add sandwich to the pan. Flip when first side is golden brown and cheese is starting to melt.
  • Once you've flipped the sandwich, it's time to add our third layer. While still in the pan, once again layer cheese, onion and cheese on the top surface of the grilled cheese. Add the last slice of bread, mayo facing out.
  • Flip the sandwich one last time to cook on the last face. Press down on the grilled cheese with your cooking utensil to make it a bit thinner.
  • Once the cheese is melted and the last side is golden brown, remove, slice, and eat immediately.

Notes

You can use as little or as much cheese and onion to fill the grilled cheese as you want. 
Remember to cook it low and slow. If the pan is too hot when you put the sandwich in, it'll burn on the outside, and the cheese won't melt. Yuck. 

Nutrition

Serving: 1sandwichCalories: 804kcalCarbohydrates: 48gProtein: 28gFat: 55gSaturated Fat: 18gPolyunsaturated Fat: 21gMonounsaturated Fat: 14gTrans Fat: 1gCholesterol: 90mgSodium: 861mgPotassium: 320mgFiber: 4gSugar: 10gVitamin A: 656IUVitamin C: 9mgCalcium: 893mgIron: 3mg
Keyword caramelized onion grilled cheese, french onion grilled cheese, french onion grilled cheese sandwich, grilled cheese with caramelized onion, grilled cheese with onion
Tried this recipe?Let us know how it was!