French Onion Grilled Cheese

5 from 1 vote

This French Onion Grilled Cheese tastes exactly like the classic soup, but in the form of a grilled cheese! The homemade onion jam pairs perfectly with the gooey cheese and crispy bread. The best way to enjoy a grilled cheese sandwich.

Prep Time10

Cook Time50

Total Time1

Course: Dinner

Cuisine: French

Keyword: French Onion Grilled Cheese

Servings: servings

Calories: 928kcal

Author: Jill

Ingredients

For the Onion Jam:

3 Tablespoons Olive Oil
8 Small Onions Sliced
1 Rosemary Sprig
2 Bay Leaves
3 Thyme Sprigs
½ Cup Brown Sugar
½ Cup Red Wine
1 Tablespoon Balsamic Vinegar
1 10.5 ounce can French Onion Soup

For the Grilled Cheese:

8 Slices Thick Sliced Bread
½ Cup Butter Softened
1 Cup Gruyere Cheese Shredded
1 Cup White Cheddar Cheese Shredded
Onion Jam
3 Tablespoons Grated Parmesan Cheese

Instructions

For the Onion Jam:

In a large skillet, heat the olive oil over medium heat. Add the sliced onions, rosemary sprig, bay leaves, and thyme sprigs. Cook, stirring occasionally, until the onions are caramelized and golden brown., about 25-30 minutes.
Add the brown sugar to the skillet and stir until dissolved. Pour in the red wine and balsamic vinegar, and cook for an additional 2-3 minutes to deglaze the pan.
Stir in the french onion soup and reduce the heat to low. Simmer the mixture for 20-30 minutes, or until thickened and jammy. Remove the rosemary sprig, bay leaves, and thyme sprigs. Set aside.

For the Grilled Cheese:

Preheat a skillet or griddle over medium heat.
Add 1 Tablespoon of butter to the skillet.
Place 1 slice of bread onto the skillet or griddle.
Sprinkle on a layer of gruyere cheese, add a generous portion of the onion jam, then sprinkle on some cheddar cheese, top with the other slice of bread.
Grill for 3-4 minutes, add more butter to the pan, and flip the grilled cheese, grill for another 3-4 minutes on the other side.
Remove the grilled cheese from the heat. Sprinkle each side with grated parmesan cheese. Repeat with remaining ingredients for more grilled cheese sandwiches.
Slice the sandwiches in half, serve hot and enjoy!

Video

Notes

You can adjust the sweetness and thickness of the onion jam by adding more or less of the brown sugar and simmering for longer or shorter.
Feel free to experiment with different types of cheese for the grilled cheese such as swiss, fontina, or provolone.
Serve the french onion grilled cheese with a side of french onion soup, beef consomme, or tomato soup.
The onion jam can be made ahead of time and stored in an airtight container in the refrigerator for up to 1 week.

Nutrition