French Onion Grilled Cheese Delight
All the cozy flavors of French onion soup tucked into a gooey, golden grilled cheese. Comforting, savory, and irresistibly melty.
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Servings:
Ingredients
Main Ingredients
- 3 tbsp unsalted butter
- 1 tbsp olive oil
- 1.25 lb yellow onions, thinly sliced
- 0.75 tsp kosher salt
- 0.5 tsp black pepper, freshly ground
- 2 tsp minced garlic
- 1 tsp dried thyme use 2 tsp if using fresh
- 0.33 cup dry white wine or dry sherry
- 0.5 cup beef broth low sodium preferred
- 1 tsp Worcestershire sauce
- 2.5 tbsp mayonnaise
- 1 tsp Dijon mustard
- 16 oz sourdough bread, sliced thick-cut works best
- 8 oz Gruyère cheese, shredded
- 4 oz provolone cheese, shredded or sliced
Instructions
Preparation Steps
- Warm a large skillet over medium heat. Melt butter with olive oil.
- Add onions and a pinch of the salt. Cook, stirring often, until deep golden, 20–25 minutes.
- Stir in garlic and thyme. Cook until fragrant, about 1 minute.
- Deglaze with white wine. Scrape up browned bits and simmer until nearly evaporated.
- Pour in beef broth and Worcestershire. Simmer until jammy and glazed, 3–5 minutes. Season with remaining salt and pepper.
- Mix mayonnaise and Dijon in a small bowl. Spread thinly on one side of each bread slice.
- Heat a clean skillet or griddle over medium-low.
- Layer Gruyère, a scoop of onions, and provolone on the uncoated side of half the bread. Top with remaining slices, mayo-side out.
- Grill sandwiches until golden and melty, 3–4 minutes per side. Cover during the first side to help melt.
- Rest 1 minute. Slice and serve hot.
Notes
Variation: Swap the wine for dry sherry and add a few caramelized onion jam spoonfuls for extra depth. Serving tip: Rub the cut side of a garlic clove on the toast before assembling for a bistro-style touch. Make-ahead: Chill the cooked onions up to 5 days; reheat before building sandwiches.
This recipe is an original creation inspired by classic French Onion Grilled Cheese Delight flavors. All ingredient ratios and instructions are independently developed.