Balsamic Red Onion And Gruyere Panini Grilled Cheese Recipe

Transform your Thanksgiving leftover balsamic red onions into a gourmet grilled cheese! This recipe combines the sweetness of balsamic-glazed red onions with the nutty sharpness of Gruyere cheese, all perfectly grilled to golden perfection. A drizzle of truffle oil adds an irresistible aroma and flavor. Serve with tomato basil soup for the ultimate comfort food experience.

Prep Time 10 mins
Cook Time 20 mins
Calories 498.3 kcal
Protein 39g
Rating 5.0 (1 Reviews)
Balsamic Red Onion And Gruyere Panini Grilled Cheese

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Recipe Author

Chef Forktionary, author of this recipe

Passionate home cook & Forktionary contributor.

Ingredients for Balsamic Red Onion And Gruyere Panini Grilled Cheese

  • Red Onion
  • Balsamic Vinegar
  • Olive Oil
  • 1/2 teaspoon salt
  • 1/4 teaspoon sugar
  • Sourdough Bread
  • Gruyere Cheese
  • White Truffle Oil

How to Make Balsamic Red Onion And Gruyere Panini Grilled Cheese

  1. In a small saucepan, combine 1 cup thinly sliced red onions, 2 tablespoons balsamic vinegar, 1 tablespoon olive oil, 1/2 teaspoon salt, and 1/4 teaspoon sugar. Cover and cook over medium-low heat for 15-20 minutes, or until the onions are very soft but still retain their purple color.
  2. While the onions cook, prepare your panini press or large skillet.
  3. Spread softened balsamic onions evenly over two slices of your favorite bread.
  4. Top with 4 ounces of Gruyere cheese, divided evenly between the two slices of bread.
  5. Top with the remaining bread slices.
  6. Lightly spray the outside of the sandwich with truffle oil.
  7. Grill the panini in a panini press or skillet over medium heat for 3-5 minutes per side, or until golden brown and the cheese is melted and gooey.
  8. Serve immediately with a bowl of warm tomato basil soup (optional).

Chef's Tip for Extra Flavor

Want to unlock deeper, more complex flavors? Try toasting your whole spices before grinding them, or blooming ground spices in a little warm oil to enhance their aroma. Deglazing your pan with a bit of stock, wine, or even water after browning ingredients can capture those tasty caramelized bits, adding richness to your dish.

Nutrition Information (Approximate per serving)

Sodium

38 g

Sugar

10g

Fat

32g

Carbs

23g