Winter Chicken Vegetable Casserole (Printable Version)
Comforting chicken with winter vegetables in a creamy herb sauce, ideal for warming cold evenings.
# What You Need:
→ Proteins
01 - 1.1 lbs boneless, skinless chicken thighs, cut into bite-sized pieces
→ Vegetables
02 - 2 large carrots, sliced
03 - 2 parsnips, peeled and chopped
04 - 1 small butternut squash, peeled and diced
05 - 1 leek, sliced
06 - 1 onion, diced
07 - 2 cloves garlic, minced
08 - 7 oz button mushrooms, sliced
→ Sauce
09 - 1 cup chicken stock (gluten-free if needed)
10 - 3/4 cup heavy cream or dairy-free cream alternative
11 - 2 tbsp Dijon mustard
12 - 2 tbsp fresh parsley, chopped
13 - 1 tsp dried thyme
14 - 1 tsp dried rosemary
15 - Salt and pepper, to taste
→ Topping
16 - 3 oz grated Gruyère or cheddar cheese, or dairy-free alternative
→ Optional
17 - 2 tbsp olive oil, for sautéing
# Directions:
01 - Preheat the oven to 375°F.
02 - Heat olive oil in a large skillet over medium heat. Add chicken pieces and cook until lightly browned, about 5 minutes. Remove and set aside.
03 - In the same skillet, add diced onion, sliced leek, and minced garlic. Sauté for 3 minutes until softened.
04 - Add carrots, parsnips, butternut squash, and mushrooms. Cook for 5 minutes, stirring occasionally.
05 - Return chicken to the skillet. Stir in chicken stock, cream, Dijon mustard, chopped parsley, dried thyme, dried rosemary, salt, and pepper. Simmer for 5 minutes.
06 - Pour the mixture into a large, ovenproof casserole dish.
07 - Sprinkle grated cheese evenly over the top of the mixture.
08 - Cover casserole with foil and bake for 30 minutes.
09 - Remove foil and bake uncovered for an additional 15 to 20 minutes until golden and bubbling.
10 - Let the casserole rest for 5 minutes before serving.
# Expert Tips:
01 -
- It comes together in under two hours but tastes like you spent all day on it.
- The cream and mustard create this subtle tang that makes every bite interesting, not just comforting.
- Everything cooks in one skillet before going into the oven, which means minimal cleanup on a tired evening.
02 -
- Don't skip browning the chicken; that five minutes of color creates a richness that carries through the whole dish even though you're not going for a deep sear.
- Taste your sauce before it goes in the oven and adjust seasoning then, not after—the cream mellows salt and spices, so be slightly generous.
- If your casserole dish is shallow, cover the foil loosely so steam can circulate; too-tight foil can make the top steam instead of brown.
03 -
- If your cream seems thin or watery after cooking, you can mix a teaspoon of cornstarch with a little cold water and stir it in while the casserole's still in the oven—it'll thicken beautifully without anyone knowing.
- Prep all your vegetables the night before and store them in containers; the next day becomes just assembly and cooking, which removes all the stress.