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Grilled Cheese with Caramelized Onions and Three-Cheese Blend

Grilled Cheese with Caramelized Onions and Three-Cheese Blend

By Traeger Kitchen

Meet the grilled cheese to end all grilled cheeses. Sweet, caramelized onions and a three-cheese blend will make you wonder how you’ve lived without this sandwich in your life.

Prep Time

10 Min

Cook Time

1 Hr

Pellets

Apple
Yields: 4 Servings

Ingredients

main
As Neededolive oil
Unsalted butter, softened, as needed
To TasteSalt
To TastePepper
2 Mediumyellow onions, halved, and sliced 1/4-inch-thick
8 SlicesWhite bread
As Neededmayonnaise
As NeededMustard
8 Slicesfontina cheese
8 Slicesmozzarella cheese
8 Sliceswhite cheddar cheese
Units of Measurement:

Steps

  • Step 1

    When ready to cook, set the Traeger temperature to 375˚F and preheat with the lid closed for 15 minutes.

    375 ˚F / 191 ˚C

  • Step 2

    Place a large cast iron pan on the grill grates and allow it to preheat for 10-15 minutes.

    00:15

    375 ˚F / 191 ˚C

  • Step 3

    In the skillet on the grill, add a teaspoon of olive oil, and 1 1/2 teaspoons of butter to coat the bottom of the pan.

    Ingredients
    • As Needed olive oil

    •  Unsalted butter, softened, as needed

  • Step 4

    Add the onions, season with a pinch of salt and pepper and close lid. Cook for 40 minutes, stirring every 10 minutes, until the onions are a rich brown color.

    00:40

    375 ˚F / 191 ˚C

    Ingredients
    • To Taste Salt

    • To Taste Pepper

    • 2 Medium yellow onions, halved, and sliced 1/4-inch-thick

  • Step 5

    Remove the onions from grill and increase the grill temp to 450˚F. Wipe out the skillet or use a cast iron griddle and place on the grill grates to preheat for 10-15 minutes.

    00:10

    450 ˚F / 232 ˚C

  • Step 6

    For each sandwich, butter 2 slices of bread on one side, that will be touching the pan. Spread a thin layer of mustard and mayo on the other side of the bread slices.

    Ingredients
    • 8 Slices White bread

    • As Needed mayonnaise

    • As Needed Mustard

  • Step 7

    Add 2 slices of each fontina, mozzarella, and cheddar cheese, then top with the caramelized onions.

    Ingredients
    • 8 Slices fontina cheese

    • 8 Slices mozzarella cheese

    • 8 Slices white cheddar cheese

  • Step 8

    Place your sandwiches in the preheated pan or on the griddle and close the lid. Grill for 8-10 minutes per side or until well browned and cheese is completely melted.

    00:16

    450 ˚F / 232 ˚C

  • Step 9

    Remove from grill, slice in half into triangles and serve immediately. Enjoy!

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