French Onion Chicken Bake
Ingredients:
- 3-4 chicken breasts (boneless skinless chicken breasts)
- 1 tsp sea salt
- 1/2 tsp black pepper
- 1 tbsp olive oil
- 2 yellow onions (large, thinly sliced)
- 3 tbsp butter
- 3 garlic (cloves garlic, minced)
- 1 tsp dried thyme ((or 1 Tbsp fresh))
- 1 tbsp Dijon mustard
- 1/2 cup beef broth ((or chicken broth))
- 1/2 cup shredded (or Swiss cheese)
- 1/2 cup shredded mozzarella
- 1-2 tbsp white wine (for extra depth)
Ingredients are subject to availability at local stores. Unavailable items will be automatically substituted at best-effort.
Instructions
1. Season the chicken. Pat chicken dry and season with salt and pepper on both sides.
2. Sear. Heat olive oil in a skillet over medium-high and sear chicken 3–4 minutes per side until lightly golden. Remove and set aside.
3. Caramelize the onions. In the same pan, melt butter. Add sliced onions with a pinch of salt. Cook 12–15 minutes, stirring often, until deep golden and jammy.
4. Add flavor. Stir in garlic, thyme, and Dijon. Cook 1 minute.
5. Deglaze. Pour in broth (and wine if using). Stir to scrape up all browned bits. Let simmer 2–3 minutes to thicken slightly.
6. Assemble. Place chicken in a baking dish. Pour the onion mixture over top.
7. Cheese it. Sprinkle Gruyère and mozzarella all over the chicken.
8. Bake. Bake at 400°F for 20–25 minutes, or until chicken is cooked through and cheese is bubbly and golden.
9. Rest + serve. Let rest 5 minutes before serving so the sauce thickens beautifully.
A cozy, melty, golden-topped chicken dinner that tastes like a rich French onion soup baked onto juicy chicken. Caramelized onions, garlic, broth, and a touch of Dijon make the sauce deep and savory, then everything gets covered in gooey cheese. It’s shockingly simple for how fancy it feels — total crowd-pleaser vibes.
Grocery List + Prices
(Based on national averages — adjust as needed for ALDI, Walmart, or Trader Joe’s)
Chicken breasts (1.25–1.5 lb) — $6.99
Yellow onions (2 large) — $1.19
Butter — $0.60 (portion cost)
Olive oil — $0.30 (portion cost)
Garlic — $0.40
Dijon mustard — $0.25 (portion cost)
Thyme — $0.10
Beef or chicken broth (1 cup) — $0.50
Gruyère or Swiss cheese — $3.99 (portion)
Mozzarella — $1.50 (portion)
Estimated Total: $15.82 Per Serving (4 servings): $3.95
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