French Onion Grilled Cheese
Ingredients:
2 tablespoons unsalted butter
1 large onion, thinly sliced
1 teaspoon sugar
Salt and pepper to taste
4 slices French bread
4 slices Swiss cheese
1/2 cup shredded Gruyère cheese
2 tablespoons mayonnaise
Directions:
In a large skillet, melt the butter over medium heat.
Add the sliced onions to the skillet and cook, stirring occasionally, until caramelized, about 20-25 minutes.
Sprinkle sugar over the onions and continue cooking until they are golden brown and caramelized.
Season with salt and pepper to taste.
Meanwhile, preheat a separate skillet or griddle over medium heat.
Spread mayonnaise on one side of each slice of bread.
Place two slices of bread, mayonnaise side down, on a clean surface.
Top each slice of bread with a slice of Swiss cheese, caramelized onions, and shredded Gruyère cheese.
Place the remaining bread slices on top, mayonnaise side up.
Carefully transfer the sandwiches to the preheated skillet or griddle.
Cook until the bread is golden brown and the cheese is melted, about 3-4 minutes per side.
Remove from the skillet and let cool slightly before serving.
Prep Time: 10 minutes | Cooking Time: 30 minutes | Total Time: 40 minutes