Prep Time 15 mins
Cook Time 6 mins
Rest Time 5 mins
Total Time 26 mins
Cooking Method:
Courses:
Difficulty: Beginner
Cooking Temp: 90  C
Servings: 4
Best Season: All Seasons
Description

Tender, juicy chicken breasts simmered in a rich, caramelized onion sauce with a cheesy, golden topping—this Slow Cooker French Onion Chicken is a comforting and flavorful meal. Perfect for busy weeknights, this dish brings the classic flavors of French onion soup into a hearty, protein-packed dinner.

Ingredients
    For the Chicken & Sauce:
  • 4 boneless, skinless chicken breasts
  • 2 large yellow onions, thinly sliced
  • 3 tbsp unsalted butter
  • 1 tbsp olive oil
  • 2 cloves garlic, minced
  • 1 cup beef broth
  • 1 tbsp Worcestershire sauce
  • 1 tsp balsamic vinegar
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 1/2 tsp dried thyme
  • 1/2 tsp onion powder
  • 1/2 tsp garlic powder
  • 1/2 cup heavy cream (optional for a creamier sauce)
    • For the Topping:
  • 1 cup shredded Gruyère cheese (or Swiss cheese)
  • 1/2 cup shredded mozzarella cheese
  • 1/4 cup grated Parmesan cheese
  • 4 slices French bread, toasted (for serving, optional)
  • 1 tbsp fresh parsley, chopped (for garnish)
Instructions
    Caramelize the Onions
  1. 1
    In a large skillet over medium heat, melt butter and olive oil. Add sliced onions and cook for 15-20 minutes, stirring occasionally, until golden brown and caramelized. Stir in minced garlic and cook for 1 more minute. Transfer the caramelized onions to the slow cooker.
    2. Prepare the Slow Cooker
  2. 2
    Arrange the chicken breasts in the slow cooker on top of the onions. In a small bowl, whisk together beef broth, Worcestershire sauce, balsamic vinegar, salt, pepper, thyme, onion powder, and garlic powder. Pour the mixture over the chicken and onions.
    3. Slow Cook the Chicken
  3. 3
    Cover and cook on low for 6 hours or high for 3-4 hours, until the chicken is tender and fully cooked.
    4. Add the Cheese Topping
  4. 4
    Preheat the oven broiler to high. Remove the chicken from the slow cooker and place it in a baking dish. Spoon some of the onion sauce over the chicken and sprinkle Gruyère, mozzarella, and Parmesan cheese evenly on top. Broil for 2-3 minutes until the cheese is melted and bubbly.
    5. Serve & Garnish
  5. 5
    Serve hot with toasted French bread on the side, or over mashed potatoes or rice. Garnish with fresh parsley and enjoy!
Note
  • For extra depth of flavor, deglaze the skillet with a splash of white wine after caramelizing the onions before adding them to the slow cooker.
  • If you prefer a thicker sauce, stir in 1 tbsp cornstarch mixed with 2 tbsp cold water during the last 30 minutes of cooking.
  • Store leftovers in an airtight container in the refrigerator for up to 3 days.
  • Reheat in the oven at 175°C (350°F) for 10-15 minutes or in the microwave.
Keywords: Easy, Comfort Food, Slow Cooker, Family-Friendly, Cheesy
Read it online: https://petitepanini.com/recipe/slow-cooker-french-onion-chicken/