French Onion Grilled Cheese

Ingredients

• 1 large yellow onion, thinly sliced
• 1 tablespoon olive oil
• 1/2 teaspoon thyme
• 4 slices sourdough
• 2 tablespoons softened butter
• 3/4 cup shredded Gruyère

Method

1. Cook onion in oil with thyme and a pinch of salt over medium-low heat until deeply golden, 20–25 minutes.
2. Divide onion and Gruyère between the bread; butter the outsides.
3. Cook covered over medium-low heat until golden.
4. Flip and finish until the cheese has melted.

Recipe concept; not kitchen-tested. AI-generated food image. Refrigerate perishable leftovers promptly; reheat cooked leftovers to 165°F when applicable.