Spinach Artichoke Chicken Casserole

The rain was hammering against the kitchen window the Tuesday I threw this casserole together with whatever sat in the fridge, and my neighbor who stopped by to borrow an umbrella ended up staying for two helpings. There is something about spinach and artichoke baked under a canopy of melted mozzarella that turns an ordinary weeknight into a small event. It has since become my default potluck contribution and my cure for the blues. Simple, rich, and endlessly forgiving.

My sister called one evening complaining about her toddler refusing anything green, and I told her to bury the spinach under cream cheese and mozzarella. She reported back three days later that he had scraped his plate clean and asked for more, which we now refer to as the Great Spinach Truce of last March.

Ingredients

• 3 cups cooked chicken breast, shredded or cubed: Rotisserie chicken is the shortcut that saves you from boiling and shredding on a busy night.
• 2 cups fresh spinach or 1 cup frozen thawed and drained: Fresh wilts down dramatically, so do not panic when it looks like a mountain in the pan.
• 1 can artichoke hearts, drained and chopped: These bring a slight tanginess that cuts through the richness of all that dairy.
• 1 small onion, finely chopped: A mild yellow onion sweats down sweet and disappears into the casserole without overpowering it.
• 2 cloves garlic, minced: Fresh garlic matters here because it blooms in the olive oil and perfumes the entire dish.
• 1 cup sour cream: This is the backbone of the creamy sauce and adds a pleasant tang that keeps things from feeling heavy.
• 4 oz cream cheese, softened: Let it sit on the counter while you prep everything else so it blends smoothly without lumps.
• 1 cup shredded mozzarella cheese plus 1 cup for topping: The first cup melts into the filling and the second cup creates that irresistible golden crust on top.
• 1/2 cup grated Parmesan cheese: A little goes a long way and adds a savory depth that mozzarella alone cannot achieve.
• 1/2 cup milk: Whole milk gives the best texture, but any milk you have on hand will work in a pinch.
• 1/2 cup mayonnaise: It sounds unusual but mayonnaise enriches the sauce and helps it brown beautifully in the oven.
• 1/2 teaspoon salt: Taste your chicken before adding salt because rotisserie birds can already be quite salty.
• 1/2 teaspoon black pepper: Freshly cracked pepper makes a noticeable difference in a dish this simple.
• 1/2 teaspoon paprika: A warm smokiness that quietly elevates the flavor without anyone quite knowing what hit them.
• 1/4 teaspoon crushed red pepper flakes, optional: Just enough warmth to linger at the back of your palate without upsetting anyone who dislikes spice.
• 2 tablespoons olive oil: Used to sauté the aromatics and contributes a fruity base note to the whole casserole.

Instructions

Preheat and prepare the dish:

Set your oven to 375 degrees Fahrenheit and lightly grease a 9 by 13 inch baking dish so nothing sticks when serving.

Sauté the aromatics:

Warm the olive oil in a skillet over medium heat and cook the onion until it turns translucent and sweet smelling, about two to three minutes, then stir in the garlic for one more minute until fragrant.

Wilt the spinach:

Add the fresh spinach to the skillet and toss gently until every leaf has collapsed and turned a deep glossy green, then pull it off the heat to cool slightly.

Build the creamy base:

In a large bowl, combine the softened cream cheese, sour cream, mayonnaise, milk, Parmesan, and one cup of mozzarella, stirring until everything is smooth and unified.

Bring it all together:

Fold in the sautéed vegetables, shredded chicken, chopped artichoke hearts, salt, pepper, paprika, and red pepper flakes, mixing until every piece of chicken is coated in that luscious sauce.

Assemble and top:

Spread the mixture evenly into your prepared baking dish and scatter the remaining cup of mozzarella across the top in a generous even layer.

Bake until golden:

Slide the dish into the oven uncovered and bake for thirty to thirty five minutes until the edges are bubbling and the cheese on top has turned a gorgeous deep gold.

Rest and serve:

Let the casserole sit for five minutes so it sets up nicely before scooping, then garnish with extra Parmesan or chopped parsley if you are feeling fancy.

Save

I will never forget the Sunday my mother in law watched me stir mayonnaise into what she assumed was a respectable dinner and raised an eyebrow, but after one bite she quietly asked for the recipe.

The Art of the Casserole Topping

Getting that perfect golden crust is partly patience and partly knowing your oven. If the cheese has melted but refuses to brown after thirty five minutes, flip the broiler on for the last two minutes and watch it like a hawk because the line between beautifully blistered and tragically burnt is razor thin.

Making It Your Own

This recipe is a canvas more than a rulebook. Chopped sun dried tomatoes folded into the filling add a sweet concentrated pop, and crumbled cooked bacon scattered over the top before baking turns the whole thing into something dangerously close to indulgent.

Serving Suggestions and Storage

A crisp green salad with a bright vinaigrette is the perfect counterpoint to all that richness on the plate. Leftovers keep beautifully in the refrigerator for up to four days and reheat gently in the microwave or oven.

• Let the casserole cool completely before covering and refrigerating so condensation does not make the topping soggy.
• A single serving reheated in the microwave for ninety seconds tastes almost as good as the first night.
• This dish also freezes well in individual portions wrapped tightly for up to three months.

Save

Some dishes feed people and some dishes gather them, and this casserole has always been the second kind for me. I hope it finds its way to your table and stays there.

Recipe FAQs

→ Can I use frozen spinach instead of fresh?

Yes, use 1 cup frozen spinach thawed and well-drained. Squeeze out excess moisture before adding to prevent the casserole from becoming watery.

→ How do I store leftovers?

Store in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave or cover with foil and warm in a 350°F oven.

→ Can I make this ahead of time?

Assemble the casserole up to 24 hours in advance, cover tightly, and refrigerate. Add 5-10 minutes to baking time if baking cold from the refrigerator.

→ What can I serve with this casserole?

A crisp green salad with vinaigrette balances the richness. For non-low carb servings, try over cooked rice, pasta, or with crusty bread to soak up the creamy sauce.

→ Can I freeze this casserole?

Yes, freeze before baking for up to 3 months. Thaw overnight in the refrigerator, then bake as directed. Already-baked portions freeze well for individual meals.