A comforting slow cooker recipe featuring tender chicken thighs simmered in a rich French onion soup base, topped with melted Gruyère cheese for a cozy, flavorful meal.
Caramelizing onions slowly is key to developing deep flavor. Searing chicken before slow cooking adds roastiness and moisture retention. Use fresh Gruyère cheese for best melting and flavor. The broiler step is optional but recommended for a golden cheese crust. For a dairy-free version, substitute butter with olive oil and use dairy-free cheese alternatives. To make gluten-free, omit baguette or use gluten-free bread. Leftovers keep well refrigerated for 3-4 days; freeze without cheese topping for up to 2 months.
Keywords: crockpot chicken, French onion soup, slow cooker recipe, Gruyère cheese, caramelized onions, easy dinner, comfort food, chicken thighs