Leftover chicken combines with yellow squash, onions, and a tasty cheese sauce in this comforting casserole. My son is not really fond of squash, but the aromas of the well seasoned sauce caught his interest, and he enjoyed his dinner. A crusty bread and a tossed salad will complete your menu.

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Recipe Summary

prep:
25 mins
cook:
50 mins
additional:
10 mins
total:
1 hr 25 mins
Servings:
6
Yield:
1 2 1/2-quart casserole
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Ingredients

6
Original recipe yields 6 servings
The ingredient list now reflects the servings specified
Ingredient Checklist

Directions

Instructions Checklist
  • Preheat the oven to 350 degrees F (175 degrees C). Grease a 2 1/2-quart baking dish and set aside.

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  • Bring about 5 cups of lightly salted water to a boil in a large saucepan or Dutch oven. Add squash, onion, parsley, thyme, and bay leaf. Bring back to a boil and cook over medium heat until squash is fork-tender, 3 to 5 minutes. Drain and discard parsley sprigs and bay leaf. Lightly press squash to remove additional liquid, then set aside.

  • Wipe out the saucepan and return to the heat. Melt 4 tablespoons butter over medium heat. Sprinkle in flour and stir, working out any lumps, until flour and butter start to bubble, about 2 minutes. Gradually stir in milk and heat to a boil, stirring constantly. Cook and stir until sauce thickens, 4 to 5 minutes.

  • Remove sauce from heat and stir in seasoned salt, Worcestershire sauce, and nutmeg. Drizzle 2 tablespoons into the egg yolks, stirring constantly to avoid lumps. Repeat with 2 additional tablespoons. Drizzle warmed eggs slowly back into the saucepan and stir until sauce is smooth. Stir in 1/2 of the Gruyere cheese and cayenne pepper. Season with salt and pepper.

  • Place well drained squash and onion into the prepared baking dish. Top with chicken. Pour sauce over chicken and squash and stir gently to coat.

  • Combine 2 teaspoons butter, remaining Gruyere cheese, and bread crumbs for the topping. Spread evenly over the casserole.

  • Bake in the preheated oven until the top is browned and bubbly, about 35 minutes. Allow to cool for 10 minutes before serving. Garnish with chopped parsley.

Cook's Notes:

Boiling and draining the squash prevents the casserole from being runny.

Try Swiss cheese, if you have no Gruyere, and zucchini would be just fine instead of yellow squash.

Nutrition Facts

398 calories; protein 24.1g; carbohydrates 21.7g; fat 24.4g; cholesterol 153.3mg; sodium 445.3mg. Full Nutrition
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Reviews (4)

Most helpful positive review

Rating: 5 stars
03/24/2021
6.29.20 ... Cheesy Chicken and Squash Casserole by BIBI! ...Bibi, Bibi! My 23's first serving was goodsized & second one - yes, SECOND - had it half gone! What-what?! I used zucchini & cheddar-jack. I'm both thyme- & nutmeg-sensitive; tend to halve them. 'Went for it as listed & they gently seasoned the dish. Subtle, yet effective. E suggested some fried onions on top. From me, more than two pounds of squash & a 9x11 rather than a round dish. 'Still very good, & I'll make again. Thank you! Read More
4 Ratings
  • 5 star values: 3
  • 4 star values: 0
  • 3 star values: 1
  • 2 star values: 0
  • 1 star values: 0
Rating: 5 stars
09/06/2020
Cheesy Chicken & Squash Casseole by Bibi. Halved the thyme & nutmeg. Read More
Rating: 5 stars
03/24/2021
6.29.20 ... Cheesy Chicken and Squash Casserole by BIBI! ...Bibi, Bibi! My 23's first serving was goodsized & second one - yes, SECOND - had it half gone! What-what?! I used zucchini & cheddar-jack. I'm both thyme- & nutmeg-sensitive; tend to halve them. 'Went for it as listed & they gently seasoned the dish. Subtle, yet effective. E suggested some fried onions on top. From me, more than two pounds of squash & a 9x11 rather than a round dish. 'Still very good, & I'll make again. Thank you! Read More
Rating: 5 stars
09/14/2020
Used shredded sharp white cheddar cheese. Read More
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Rating: 3 stars
07/08/2020
I used chicken tenderloins. Added seasoning and boiled for twenty minutes. Removed chicken then added the onions and squash to the same pot with water I used to cook chicken. I used evaporated milk and Swiss instead of Gruyere because that’s what I had on hand. I was little disappointed. It wasn’t as good and flavorful as I thought it would be. Too many steps to this recipe. I like easier recipes unless the extra steps make for a scrumptious dish! Read More