This hot chicken salad casserole has been a comforting staple in my kitchen for years and shows up whenever I want something reliably cozy and a little nostalgic. I first stumbled on this combination of creamy mayonnaise, condensed cream of chicken soup, shredded cheddar and the surprise crunch of water chestnuts and slivered almonds during a rainy weekend when I was trying to use up a rotisserie chicken. The result was a warm, cheesy dish with bright lemon notes and a crisp potato chip crust that felt both homey and a little celebratory—easy enough for a weeknight, special enough for guests.

What makes this dish stand out is the contrast of textures: tender cooked chicken and soft, creamy binder meet the clean snap of celery and water chestnuts, finished with the unmistakable crunch of crushed potato chips. The flavors are straightforward—savory from the condensed soup and cheddar, tang from the lemon juice, and a gentle nuttiness from the slivered almonds. Over the years I’ve learned a few small adjustments that lift the casserole from good to memorable, and I’ll share those as we go.

Ingredients

• Cooked chicken (4 cups): Use leftover roasted chicken, a store rotisserie bird, or poached breasts. For the best texture, dice the meat into 1/2-inch pieces so each bite is tender but still yields chew. A cooked weight of about 1 1/2 to 1 3/4 pounds raw before cooking will produce roughly 4 cups diced.
• Celery (1/2 cup finely chopped): Adds a crisp, green note and lightness. Choose firm celery ribs and chop small so the texture blends with the chicken without interfering with spooning.
• Onion (1 tablespoon grated): Grating a raw sweet or yellow onion mellows the bite while distributing small onion flavor throughout the creamy base.
• Mayonnaise (1 cup): Use full-fat mayonnaise for richness and a smooth binder. If you prefer a lighter result, a 3/4 cup plain Greek yogurt plus 1/4 cup mayo works but will alter creaminess and tang.
• Condensed cream of chicken soup (10.75-ounce can): Acts as the savory backbone and helps the casserole set. Buy a reputable brand you like; low-sodium versions are available if you’re watching salt.
• Lemon juice (1 tablespoon): Brightens the mixture and prevents the dish from tasting too heavy—don’t skip it.
• Black pepper (1/2 teaspoon) and salt to taste: Pepper adds warmth; salt is best adjusted after tasting since canned soup and cheese already contain sodium.
• Shredded cheddar cheese (1 cup): Sharp or mild cheddar both work—sharp yields more pronounced tang. Freshly shred from a block for the best melt.
• Water chestnuts (8-ounce can, drained and chopped): Provide a clean, juicy crunch unlike other canned vegetables; chop coarsely and drain thoroughly to avoid extra moisture.
• Slivered almonds (1/2 cup): Bring a toasty nuttiness and extra texture; lightly toast them in a dry skillet for deeper flavor if you have time.
• Potato chips (1 1/2 cups coarsely crushed): Plain or ruffled chips create the crunchy topping—use a sturdy chip for best structure and flavor. Ruffled chips hold up especially well during baking.

Instructions

Preheat and Prepare Pan: Set the oven to 350°F. Grease an 11×7-inch casserole dish with butter or nonstick spray, ensuring you coat corners. A glass or ceramic dish works well and yields even heat—if using metal, reduce the oven temperature by 10°F to prevent overbrowning. Combine the Chicken Mixture: In a large bowl, add 4 cups diced cooked chicken, 1/2 cup finely chopped celery, and 1 tablespoon grated onion. Stir in 1 cup mayonnaise, the 10.75-ounce can condensed cream of chicken soup, 1 tablespoon lemon juice, 1/2 teaspoon black pepper, and 1 cup shredded cheddar. Fold in the drained and chopped water chestnuts and 1/2 cup slivered almonds until everything is evenly coated. Season and Taste: Taste a small spoonful and add salt carefully—start with 1/4 teaspoon and increase to 1/2 teaspoon if needed. Remember the condensed soup and cheese provide salt, so err on the lighter side. If the mixture feels too thick, add up to 1 tablespoon of milk to loosen it slightly. Transfer to Dish: Spread the combined mixture into the prepared 11×7 dish, smoothing the top so it bakes evenly. Leaving a little space at the edges helps the topping brown uniformly. Add the Topping: Coarsely crush 1 1/2 cups of potato chips in a bowl and sprinkle them evenly over the surface. Pat them lightly so they adhere. For extra butter flavor, toss the crushed chips with 1 tablespoon melted butter before topping. Bake and Rest: Bake for 25 minutes, or until the topping is golden and the casserole is bubbling around the edges. Let the dish rest 5 to 10 minutes before serving so it firms up and is easier to portion.

Storage Tips

To store leftovers, allow the casserole to cool to room temperature, then cover tightly and refrigerate for up to 3 days. Use shallow airtight containers for faster cooling. For freezing, wrap the entire dish in plastic wrap and aluminum foil, or transfer portions into freezer-safe containers; label with date and freeze up to 3 months. Reheat thawed portions in a 350°F oven until the center reads 165°F, and add fresh crushed chips for renewed crunch after reheating.

Ingredient Substitutions

If you’re avoiding nuts, swap slivered almonds for toasted pepitas or omit them entirely—add extra celery for crunch. Use canned cream of mushroom in place of cream of chicken for an earthier flavor, or substitute shredded Monterey Jack or Colby for cheddar for milder melting quality. For a lighter binder, try 3/4 cup plain Greek yogurt plus 1/4 cup mayonnaise; note the texture will be tangier and slightly less rich.

Serving Suggestions

Serve warm with a simple green salad dressed in a bright vinaigrette to cut through the richness, or alongside steamed green beans and roasted new potatoes for a complete meal. For a casual buffet, place the casserole on a wooden board with sliced crusty bread and pickles. Garnish with chopped fresh parsley or chives and a lemon wedge for brightness and color.

Meal Prep Tips

Assemble the casserole in advance and keep it covered in the refrigerator for up to 24 hours; add the crushed chips right before baking to preserve crunch. Portion into single-serve ramekins before freezing for easy weekday reheating—bake from frozen at 350°F for 30–35 minutes until hot. Use disposable foil pans if transporting to potlucks and reheat in the host’s oven right before serving.

Cultural Background

This creamy, chip-topped casserole is a distinctly American comfort-dish tradition, rooted in mid-20th-century home cooking where canned soups and convenient pantry items were frequently combined into baked dishes. Variations of warm chicken salads and creamy bakes have long been popular in community cookbooks and church potlucks, celebrated for their comforting flavors and ease of preparation. Add-ins like water chestnuts and nuts reflect regional tastes and a desire for texture.

Seasonal Adaptations

In winter, fold in roasted butternut squash and swap raw celery for sautéed leeks to deepen flavor. In summer, lighten the dish with fresh lemon zest, add chopped fresh herbs like tarragon or dill, and serve smaller portions as a warm topping for grilled bread. For holiday gatherings, substitute pecans for almonds and top with crushed butter crackers mixed with a little melted butter for a holiday-friendly twist.

Bring this casserole to your next family dinner and watch how easily it becomes part of the rotation—simple, adaptable, and reliably satisfying. Cooking together, sharing a warm dish, and passing around second helpings is what this recipe is all about—make it your own and enjoy every comforting bite.