Why you’ll love this recipe

  • The cream sauce uses basic pantry ingredients.
  • A crumb topping adds contrast to the soft filling.

Ingredient notes

  • Use chicken that is already fully cooked.
  • A shallow baking dish gives more crisp topping.

Equipment you’ll need

  • 9-by-13-inch baking dish
  • Saucepan
  • Whisk

Helpful cooking tips

  • Whisk liquid into the flour gradually to avoid lumps.
  • Check the center temperature rather than relying on browned crumbs.

Make it your own

Variations

  • Add 1/2 cup shredded cheddar to the sauce.

Substitutions

  • Use diced cooked turkey instead of chicken.

What to serve with it

  • Serve with a lemony green salad.

Storage, freezing & reheating

In the refrigerator

Divide leftovers into shallow containers and refrigerate within 2 hours (within 1 hour if above 90°F / 32°C). Keep at 40°F / 4°C or colder and use within 3–4 days.

In the freezer

Freeze cooled portions in sealed freezer containers for up to 2 months for best quality. Thaw overnight in the refrigerator.

To reheat

Reheat a single portion in the microwave, loosely covered, stirring or turning halfway through. Heat to 165°F / 74°C throughout; add a spoonful of water if needed.

Frequently asked questions

Can I assemble it ahead?

Yes. Refrigerate the assembled filling for up to 1 day, then add crumbs before baking. A cold casserole takes longer; bake until the center reaches 165°F / 74°C.