Step 1

Preheat oven to 375 degrees F (190 degrees C). Lightly coat a baking dish with cooking spray.

Step 2

Melt butter in a large skillet over medium heat. Cook and stir onion, celery, and 1 teaspoon salt in melted butter until onion begins to turn translucent, about 5 minutes. season with black pepper, sage, thyme, rosemary, and cayenne pepper; cook and stir about 1 minute.

Step 3

Remove skillet from heat and stir in chicken broth.

Step 4

Combine crushed crackers and onion mixture in a large bowl. Add egg and cream; mix until combined. Season with salt and black pepper.

Step 5

Spread cracker mixture evenly in a large baking dish and smooth the top.

Step 6

Bake in the preheated oven until top is golden brown, 40 to 45 minutes.