Crockpot Gruyère French Onion Chicken Cutlets Step-by-step instructions

Before you start

Before starting, pat the chicken cutlets dry with paper towels and season them with salt and pepper. Slice the onions thinly; a mandoline makes quick work of this.

Measure out the broth, cream, and shredded cheese so everything is ready to layer. Set the slow cooker on a sturdy counter. If you plan to serve with mashed potatoes, start them about 30 minutes before the chicken is done.

Instructions

Layer Everything in the Crockpot

1. 1Layer the Chicken and Onions
   Place the chicken breast cutlets in an even layer in the bottom of a 6-quart slow cooker. Season both sides with salt and black pepper. Scatter the sliced sweet onions over the top, then add the fresh thyme sprigs. Pour the chicken broth evenly over everything.
   Look for The cutlets should be nestled in the onions and broth, with the thyme tucked between layers.
   Tip Use a slow cooker liner for easier cleanup, if desired.
2. 2Add the Cream and Cheese
   Drizzle the heavy whipping cream evenly over the chicken and onions. Sprinkle the shredded Gruyère cheese generously over the top, covering the surface completely.
   Look for The cheese should blanket the onions and chicken in a thick, even layer.
   Tip For a deeper flavor, use aged Gruyère and shred it yourself from a block.

At the end of this phase, the slow cooker contains an even layer of seasoned chicken cutlets, topped with a mound of sliced onions, fresh thyme sprigs, and a pour of chicken broth.

The cream and shredded Gruyère are spread on top, creating a thick, cheesy blanket. The ingredients are not mixed together — they'll meld during cooking. The slow cooker is ready to turn on.

Let It Bubble and Simmer

3. 3Slow-Cook Until Tender
   Cover the slow cooker and cook on LOW for 4 hours or on HIGH for 2 to 3 hours, until the chicken is cooked through and registers 165°F (74°C) in the thickest part. The onions should be very soft and the sauce bubbling around the edges.
   Look for The sauce will be gently bubbling and the cheese melted and golden in spots.
   Safe temperature 165°F (74°C) internal temperature (poultry)
   Tip Avoid lifting the lid during cooking, as it releases heat and extends the cooking time.

After 2 to 4 hours, the slow cooker is filled with a fragrant, bubbling sauce. The onions have softened and released their sweetness, the chicken is cooked through, and the cheese has melted into the cream and broth.

The aroma is savory and slightly sweet. The sauce is thin but will thicken as it rests. The chicken should register 165°F (74°C).

Rest, Serve, and Enjoy

4. 4Rest and Serve
   Turn off the slow cooker and let the dish rest for 5 minutes. Remove the thyme sprigs. Serve the chicken and onions over warm Yukon Gold mashed potatoes, spooning the creamy Gruyère sauce over the top.
   Look for The sauce should be thick enough to coat the back of a spoon.
   Tip For a thicker sauce, let it sit uncovered for 10 minutes before serving.

The slow cooker is turned off, and the dish rests for 5 minutes. The sauce has thickened slightly and coats the chicken and onions. The thyme sprigs are removed. A generous portion of chicken and sauce is spooned over warm mashed potatoes, with the creamy Gruyère sauce drizzled on top. The dish is ready to serve.

Common mistakes

One common mistake is lifting the lid too often, which lets heat escape and lengthens cooking time. Another is using pre-shredded cheese, which may not melt as smoothly.

Overcooking can dry out the chicken, so check the temperature at the minimum time. Also, avoid adding too much salt early, as the broth and cheese add saltiness; season conservatively and adjust at the end.

How to tell it’s done

The chicken is done when it reaches an internal temperature of 165°F (74°C) in the thickest part. The onions should be very soft and translucent, and the sauce should be gently bubbling around the edges. The cheese should be fully melted and lightly golden in spots. Let the dish rest for 5 minutes before serving so the sauce thickens slightly.

• Poultry: 165°F (74°C) in the thickest part