Caramelized Onion Grilled Cheese

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Caramelized Onion Grilled Cheese Sandwiches are an easy lunch or dinner for any day of the week. It’s a bit sweet from the onions and cheesy goodness.

Course Sandwich

Cuisine American

Prep Time 10

Cook Time 30

Total Time 40

Servings sandwiches

Calories 555kcal

Author Beth Neels

Cost $5

Equipment

Ingredients

For the Caramelized Onions

1 medium onion
¼ cup molasses
2 tablespoons butter
1 tablespoon olive oil
1 teaspoon salt
½ teaspoon cracked black pepper
2 tablespoons balsamic or red-wine vinegar

For the Sandwiches

16 slices bread
16 slices cheese
8 tablespoons mayonnaise

Instructions

For the Onions

Slice the onions into uniform thickness slices. You can choose very thin or medium, which is about ¼-inch.
Add the butter and oil to a skillet. Top with the onions and season them with the salt and pepper.
Cook on medium-low, stirring often until the onions soften. Pour in the molasses.
Continue cooking and stirring every few minutes until the onions are very soft and a deep golden brown.
Deglaze the skillet with vinegar, water or beef broth and scrape the browned bits from the bottom. Let the liquid cook off completely. Cool.

For the Grilled Cheese

Spread mayo on both sides of the bread. Toast one side in the skillet. Flip and build the sandwiches in the pan.
Layer the cheese on the toasted side of one piece of bread. Top with a couple of tablespoons of caramelized onions. Top with another piece of bread, toasted side down.

Notes

The onions make a big batch. If you are only making a few sandwiches, store the onions in airtight containers in the freezer, in single-serve portions for easy meal prep.

Nutrition