How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Grandpa's Overnight Chicken Casserole?

You need 12 ingredients. The key ingredients include: 2 cups elbow macaroni, uncooked, 2 cups cooked chicken, cut in chunks, ¾ cup finely cut celery, ½ cup finely cut green pepper, and more.

Is Grandpa's Overnight Chicken Casserole suitable as meat & poultry?

Yes, Grandpa's Overnight Chicken Casserole falls under the Meat & Poultry category and is a great choice for this type of meal.

How do I store leftover Grandpa's Overnight Chicken Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Grandpa's Overnight Chicken Casserole Recipe

Name: Grandpa's Overnight Chicken Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 cups elbow macaroni, uncooked; 2 cups cooked chicken, cut in chunks; ¾ cup finely cut celery; ½ cup finely cut green pepper; ½ cup stuffed green olive, sliced; 2 cans cream of mushroom soup; 2 cups milk; 12 lb grated cheddar cheese; 3 hardboiled egg, quartered; 1 tablespoon dried onion flakes; 1 teaspoon salt; 1 cup crushed potato chips

Try this homemade Grandpa's Overnight Chicken Casserole recipe the whole family will love. Made with elbow macaroni, chicken, celery and green pepper. E…

This Grandpa's Overnight Chicken Casserole relies on simple, everyday ingredients such as elbow macaroni, uncooked, finely cut celery, finely cut green pepper and stuffed green olive, sliced. It comes together quickly and makes 4 servings, at about 5959 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Meat & Poultry

5959

kcal

Calories

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

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Grandpa's Overnight Chicken Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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