French Onion Sandwiches
Indulge in the rich, savory flavors of French Onion Sandwiches, a culinary twist on the classic soup that transforms into a handheld delight. This recipe pairs golden, slow-caramelized onions enhanced with a touch of balsamic vinegar and fresh thyme with creamy Gruyere cheese for an irresistible combination. Nestled on crusty French bread slathered with Dijon mustard, these sandwiches are baked until the bread is perfectly crisp and the cheese is gooey and melted. Perfect as a comforting dinner or an elevated lunch option, they bring the deep, robust taste of French onion soup to the table in just 40 minutes. Whether paired with a crisp salad or enjoyed on their own, these sandwiches will quickly become a family favorite!
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Recipe Information
Ingredients
- 2 tablespoons unsalted butter
- 1 tablespoon olive oil
- 4 large yellow onions
- 1 teaspoon sugar
- 1 tablespoon balsamic vinegar
- 0.25 cup beef broth
- 1 teaspoon fresh thyme leaves
- 1 loaf French bread or baguette
- 8 ounces Gruyere cheese
- 4 teaspoons Dijon mustard
- to taste salt
- to taste black pepper
Instructions
Peel and thinly slice the onions into half-moons.
In a large skillet, melt the butter with the olive oil over medium heat.
Add the sliced onions to the skillet and stir to coat them in the fat.
Cook the onions for about 25-30 minutes, stirring occasionally, until they are deep golden brown and caramelized. Lower the heat if necessary to prevent burning.
Sprinkle the sugar over the onions and stir. Cook for an additional 2 minutes.
Deglaze the pan by adding the balsamic vinegar and stirring to scrape up any browned bits from the bottom of the skillet.
Pour in the beef broth and sprinkle in the thyme leaves. Stir and cook for another 2-3 minutes, letting the liquid reduce slightly. Season with salt and black pepper to taste. Set the caramelized onion mixture aside.
Preheat your oven to 375°F (190°C).
Slice the French bread or baguette lengthwise and into sandwich-sized portions.
Spread 1 teaspoon of Dijon mustard on the bottom half of each bread portion.
Place a generous portion of the caramelized onions on top of the mustard.
Slice the Gruyere cheese and arrange it on top of the onions.
Place the top halves of the bread onto the sandwiches and gently press down.
Wrap each sandwich in aluminum foil and place them on a baking sheet.
Bake in the preheated oven for 10-12 minutes, until the cheese is fully melted and the bread is crisp.
Carefully unwrap the sandwiches and serve immediately. Enjoy your French Onion Sandwiches!
Nutrition Facts
Calories |
2679 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 117.7 g | 151% | |
| Saturated Fat | 59.8 g | 299% | |
| Polyunsaturated Fat | 1.3 g | ||
| Cholesterol | 313 mg | 104% | |
| Sodium | 6036 mg | 262% | |
| Total Carbohydrate | 294.0 g | 107% | |
| Dietary Fiber | 20.6 g | 74% | |
| Total Sugars | 38.2 g | ||
| Protein | 112.6 g | 225% | |
| Vitamin D | 0.0 mcg | 0% | |
| Calcium | 2559 mg | 197% | |
| Iron | 12.2 mg | 68% | |
| Potassium | 1464 mg | 31% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
