• 4 boneless, skinless chicken breasts
  • 2 large onions, thinly sliced
  • 2 cloves garlic, minced
  • 2 cups beef broth
  • 1 cup shredded Gruyère  cheese
  • 2 tablespoons olive oil
  • Salt and pepper to taste
  • Fresh thyme for garnish


  1. Preheat your oven to 375°F (190°C).
  2. Season the chicken breasts with salt and pepper on both sides.
  3. In a large skillet, heat the olive oil over medium heat. Add the chicken breasts and cook until golden brown on both sides, about 3-4 minutes per side. Remove from the skillet and set aside.
  4. In the same skillet, add the sliced onions and garlic. Cook, stirring occasionally, until the onions are soft and caramelized, about 15-20 minutes.
  5. Deglaze the skillet with beef broth, scraping up any browned bits from the bottom of the pan.
  6. Return the chicken breasts to the skillet, nestling them into the onion mixture.
  7. Top each chicken breast with shredded Gruyère  cheese.
  8. Transfer the skillet to the preheated oven and bake for 20-25 minutes, or until the  cheese is bubbly and golden brown.
  9. Garnish with fresh thyme before serving.

Storage Methods:

  • Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave until heated through.


  •  Vegetarian Option: Replace the chicken breasts with portobello mushrooms for a hearty vegetarian alternative.
  • Add Some Heat: Kick up the spice level by adding a pinch of red pepper flakes to the onion mixture.
  • Creamy Twist: For a creamy variation, stir in a dollop of cream  cheese or heavy cream into the onion mixture before baking.

Benefits of Ingredients:

  • Chicken: Packed with protein and low in fat, chicken is a lean and versatile protein source.
  • Onions: Rich in antioxidants and anti-inflammatory compounds, onions not only add flavor but also offer a myriad of health benefits.
  • Gruyère  Cheese: While indulgent, Gruyère  cheese is a good source of calcium and protein, albeit in moderation due to its higher fat content.

In conclusion, Marie’s Keto French Onion Chicken Bake is more than just a meal—it’s a culinary enchantment that brings warmth and comfort to all who partake in its magic. So, gather your ingredients, channel your inner chef, and prepare to embark on a gastronomic journey like no other.