2lbcooked shredded chickenabout 2 pounds, rotisserie or poached
1.5cupfrozen peas and carrots
1cupceleryfinely chopped
0.5cuponionfinely chopped
2tbspbutter
3tbspall-purpose flour
2.5cupchicken brothlow-sodium preferred
1cupmilkwhole or 2%
1.5cupsharp cheddar cheeseshredded, divided
0.5tspdried thyme
0.5tspblack pepperfreshly ground
1tspsalt
1cupbreadcrumbspanko or regular
2tbspmelted butterfor topping
Instructions
Preparation Steps
Preheat the oven to 375°F (190°C). Grease a 9x13-inch baking dish and set aside.
In a large skillet, melt 2 tablespoons butter over medium heat. Add chopped onion and celery and cook until softened, about 5 minutes.
Stir in the flour and cook for 1 minute to remove the raw flour taste.
Gradually whisk in the chicken broth and milk until smooth. Bring to a simmer and cook until the sauce thickens, about 3 to 5 minutes.
Remove from heat and stir in 1 cup of shredded cheddar, thyme, salt and pepper. Fold in the cooked shredded chicken and frozen peas and carrots.
Pour the mixture into the prepared baking dish, smoothing the top. Sprinkle the remaining 0.5 cup cheddar evenly over the casserole.
Combine breadcrumbs with 2 tablespoons melted butter and sprinkle over the cheese layer.
Bake in the preheated oven for 25 to 30 minutes, or until the top is golden and the casserole is bubbling around the edges. Let rest 5 minutes before serving.
Notes
This casserole stores well in the refrigerator for up to 3 days and can be frozen for up to 2 months. Reheat covered at 350°F until warmed through.