I perfected The Best Chicken Casserole and I’m sharing the unexpected pantry shortcut and golden cracker topping that made it an instant hit.

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I’ve been making this Million Dollar Chicken Casserole for years, and I still get surprised how simple leftover rotisserie chicken becomes something people fight over. I fold shredded cooked chicken into a rich blend with cream cheese and a little mayo, then press a crunchy cracker crust on top so every bite has that salty snap.

Some call it Chicken Cracker Casserole or Chicken Casserole With Mayo, others swear its the Best Chicken Casserole Ever. I won’t give away all my little tricks here, but if you want a slightly fancy, totally reliable weeknight winner, keep reading.

Why I Like this Recipe

– I love how warm and cozy it is, total comfort food that makes me relax
– I like that it’s quick to throw together, you can pop it in the oven and do other stuff, saves time
– I enjoy the contrast between the soft creamy center and the crunchy top, keeps every bite interesting
– I like that there are always leftovers for lunch the next day, somehow they taste even better

Ingredients

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Chicken gives lots of protein and iron, it’s filling and keeps casserole hearty
Cream cheese adds rich creaminess, high in fat low in fiber not very healthy
Sour cream brings tang and moisture, adds fat and a little probiotic interest
Sharp cheddar gives melty cheesy flavor, adds protein calcium but also sodium
Crushed buttery crackers add crunch and carbs, mostly refined flour and salt
Butter boosts richness and browning, it’s saturated fat so use mindfully
Peas give pops of sweetness, fiber and plant protein, plus vitamins A and C
Onion soup mix brings savory depth and salt, contains dried onion and herbs

Ingredient Quantities

3 cups cooked chicken, shredded or cubed (about 1 large rotisserie chicken)

8 oz cream cheese, softened

1 cup sour cream

1/2 cup mayonnaise

1 (1 oz) envelope dry onion soup mix

1 1/2 cups shredded sharp cheddar cheese, divided

1/2 cup grated Parmesan cheese (optional)

2 cups crushed buttery crackers (Ritz), about 60 crackers

6 tablespoons unsalted butter, melted

1 cup frozen peas, thawed (optional)

1/4 cup chopped green onions or parsley, plus more for garnish (optional)

1/2 teaspoon kosher salt

1/4 teaspoon black pepper

How to Make this

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1. Preheat oven to 350 F and grease a 9×13 baking dish (or line with foil for easy cleanup); set aside.

2. Soften the 8 oz cream cheese (microwave 20 to 30 seconds if needed), then beat it with 1 cup sour cream, 1/2 cup mayonnaise, 1 (1 oz) envelope dry onion soup mix, 1/2 teaspoon kosher salt and 1/4 teaspoon black pepper until smooth and slightly fluffy. (A hand mixer helps but a sturdy whisk works too.)

3. Fold in 3 cups cooked chicken (shredded or cubed), 1 cup shredded sharp cheddar, 1 cup thawed frozen peas if using, and about 1/4 cup chopped green onions or parsley. Stir until everything is evenly coated; taste and adjust salt or pepper if needed.

4. Spread the chicken mixture evenly into the prepared baking dish. Smooth the top with a spatula so the cracker topping will sit flat.

5. Make the cracker topping: pulse 2 cups buttery crackers (about 60 Ritz) in a food processor or crush them in a sealed bag until coarse crumbs. Mix crumbs with 6 tablespoons melted unsalted butter, the remaining 1/2 cup shredded sharp cheddar, and 1/2 cup grated Parmesan if using, until the crumbs are evenly moistened.

6. Sprinkle the cracker-cheese mixture evenly over the chicken layer, pressing down gently so it adheres. Tip: if you like extra crunch, toast the crumbs in a skillet for 2 minutes before topping.

7. Bake uncovered for 25 to 30 minutes, until the filling is bubbly and the topping is golden. If you want a deeper brown top, move the casserole to the top rack and broil 1 to 2 minutes, watching like a hawk so it doesn’t burn.

8. Let the casserole rest 5 to 10 minutes before serving so the sauce firms up. Garnish with extra chopped green onions or parsley. Leftovers keep 3 to 4 days in the fridge; to make ahead, assemble but do not bake, cover and refrigerate up to 24 hours then bake a few extra minutes.

Equipment Needed

1. Oven (preheat to 350 F), you’ll need it hot
2. 9×13 baking dish, or line with foil for easy cleanup
3. Large mixing bowl and a medium bowl for folding stuff together
4. Hand mixer, or a sturdy whisk if that’s what you got
5. Rubber spatula or offset spatula to spread the filling smooth
6. Food processor, or a heavy zip-top bag plus rolling pin or mallet to crush crackers
7. Measuring cups and spoons for the dairy and spices
8. Knife and cutting board for chopping green onions and prepping chicken
9. Baking sheet to broil on or catch any drips, and oven mitts so you dont burn yourself

FAQ

Q: How long and at what temperature do I bake this casserole? A: Preheat oven to 350°F. Bake uncovered about 25 to 30 minutes until it's bubbling and the cracker topping is golden. If the casserole was cold from the fridge give it an extra 5 to 10 minutes, or heat until the center reaches 165°F.

Q: Can I make this ahead or freeze it? A: Yes. Assemble without the cracker topping and freeze in an airtight pan up to 2 months. Thaw overnight in the fridge, add the buttered cracker topping, then bake 30 to 40 minutes until hot. If you freeze the fully baked version the topping may get soft, but reheats fine covered at 350°F for 20 to 25 minutes.

Q: What are good substitutions for the crackers or cheeses? A: Use panko or seasoned breadcrumbs instead of Ritz, or crushed saltine or cornflake crumbs for extra crunch. Swap sharp cheddar for Colby, Monterey Jack or a mix, and you can use Neufchatel or a lighter cream cheese, or 1 to 1 Greek yogurt for sour cream to cut calories.

Q: Can I use raw chicken in the casserole? A: It's best to use cooked chicken. If you start with raw, poach or roast it first then shred it, about 20 minutes poaching until the chicken hits 165°F. Putting raw chicken straight in a creamy casserole can make it dry or unevenly cooked.

Q: How do I keep the cracker topping crunchy? A: Toss crushed crackers with the melted butter right before you add them, and sprinkle them on only at bake time. Bake uncovered for the last 10 minutes to crisp, or finish 1 to 2 minutes under the broiler watching closely so it doesn't burn.

Q: Can I add more veggies or make it lighter? A: Yes add peas, cooked broccoli florets, carrots or mushrooms but precook or steam them to remove extra water so the casserole isn't watery. To lighten, swap some sour cream and mayo for Greek yogurt and use part-skim cheese, also reduce added salt if your crackers or rotisserie chicken are salty.

Ultimate Comfort Food: Chicken Casserole Recipe Substitutions and Variations

Cream cheese: swap with 1 cup ricotta, or 1 cup full-fat Greek yogurt (strained), or an 8 oz Neufchatel, lower-fat option, texture will be a bit looser but still creamy.
Sour cream: replace 1 cup with 1 cup plain Greek yogurt, or 1 cup cottage cheese blitzed smooth, same tang just slightly different body.
Crushed buttery crackers (Ritz) topping: use 2 cups panko breadcrumbs tossed with 4 tbsp melted butter, or 2 cups crushed saltines or crushed buttery pretzels for extra crunch.
Onion soup mix: make a quick mix of 1 tbsp onion powder + 1 tsp garlic powder + 1 tsp chicken bouillon + 1 tsp dried parsley, or use 1 tbsp dried minced onion plus 1 tsp bouillon granules.

Pro Tips

– Don’t let the chicken be wet. If you’re using rotisserie or poached chicken, pat it dry or let it sit in a colander for a few minutes. Too much juice makes the casserole runny and the cracker topping will go soggy.

– Soften the cream cheese all the way and beat it till smooth, not lumpy. Cut it into chunks first and warm in short bursts if needed, then mix until slightly airy. Lumps of cream cheese are annoying and they stay that way after baking.

– For a seriously crunchy top, keep the cracker crumbs a little coarse and mix them well with the melted butter and cheese so they stick. If you like extra crunch toast the crumbs briefly in a pan before topping, but watch it closely or they burn fast.

– Taste and tweak before baking. Add a squeeze of lemon or a little Dijon mustard if it tastes flat, and don’t be shy with fresh herbs at the end for brightness. If you assemble it ahead, plan extra bake time and let it rest a bit before serving so it firms up.