French Onion Grilled Cheese From The Sandwich King Recipes

Steps:

• Melt the butter with the olive oil in a heavy-bottomed pot over medium-high heat. Add the onions, season with salt and pepper and spread the onions in an even layer. Cover the pot and turn down the heat to medium low. Sweat, steam and soften the onions, 10 to 15 minutes. Uncover and continue cooking until caramelized, 25 to 30 minutes, stirring frequently. Add the sherry and scrape up any bits from the bottom of the pan. Stir in the thyme and season with salt and pepper.
• Preheat a griddle to medium-low heat. Put 1 slice white American cheese on 4 slices country white bread and 1 slice yellow American cheese on 4 more bread slices. Divide the onions between half the bread, then close and butter both sides. Place the sandwiches on the griddle; cover with a metal bowl (careful, it will get hot) and let the sandwiches get nice and golden brown, 2 to 3 minutes. Flip, cover again and cook until the cheese is melted and the sandwiches are golden brown, 2 to 3 minutes.

Steps:

• Melt 1 tablespoon of the butter in a large sauté pan over medium heat. Add the onion and cook until the slices start to wilt and turn translucent, about 3 minutes. Add the onion soup mix, thyme and 2 tablespoons water. Turn the heat to low, then continue to cook, stirring and adding more water a tablespoon at a time if the mixture gets too dry, until the onions are very soft and golden brown, 5 to 10 more minutes.
• Melt 1 tablespoon butter in a saute pan over medium heat. Spread 1 teaspoon mustard onto one side of each slice of bread. Divide the Cheddar, Gruyere, caramelized onions and crispy onions between 2 of the slices of bread on top of the mustard. Top each with another slice of bread, mustard-side in, and lay the sandwiches in the pan. Cook, pressing down on top of the sandwiches, until the bottoms are golden brown, about 2 minutes. Add the remaining 1 tablespoon butter to the pan and flip the sandwiches, cooking until the cheese is melted and the bottoms are golden brown, about 3 more minutes. Cut in half and serve.