Preheat your oven to 375°F (190°C) and lightly grease a 9x13-inch baking dish to prevent sticking

Season the chicken breasts evenly with salt and black pepper, then place them in a single layer in the prepared dish

In a mixing bowl, combine the crushed Ritz crackers, grated Parmesan cheese, and melted butter until evenly coated

Spread the sour cream evenly over the chicken, making sure each piece is well covered

In another bowl, whisk together the cream of chicken soup and chicken broth until smooth

Pour the soup mixture evenly over the chicken, ensuring it seeps into all areas

Sprinkle the buttery cracker mixture generously over the top to form a thick, even layer

Bake in the preheated oven for 35–40 minutes until the chicken is fully cooked and the topping is golden brown

Remove from the oven and allow the casserole to rest for a few minutes before serving

Garnish with freshly chopped parsley for a pop of color and freshness