High-Protein Spinach Artichoke Chicken Casserole

Irresistible High-Protein Casserole

I first made this High-Protein Spinach Artichoke Chicken Casserole on a chilly weeknight when I wanted something cozy, filling, and quick. It’s essentially a mash-up of classic spinach-artichoke dip and shredded chicken baked into a creamy, cheesy casserole — perfect for family dinners, meal prep, or a potluck dish. If you love simple baked meals, you might also enjoy this easy chicken and spinach casserole.

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Why you’ll love this High-Protein Spinach Artichoke Chicken Casserole recipe

This casserole delivers big on protein and flavor with minimal fuss. It’s an efficient way to turn leftover or rotisserie chicken into a nutrient-packed main that kids and adults usually approve of. The cottage cheese and shredded mozzarella create a creamy interior while Parmesan gives a salty, golden top — all without heavy cream. It works for weeknight dinners, makes great leftovers, and scales easily for a crowd.

“A total crowd-pleaser—cheesy, comforting, and surprisingly light for something so rich.” — a regular at my dinner table

For a similar make-ahead casserole idea that’s great for family gatherings, consider the lighter rice-forward option in this angel chicken rice casserole.

How this recipe comes together

Think of this as an assembly-and-bake recipe. You’ll wilt and chop the spinach (if you prefer, use baby spinach raw — it will cook in the oven), mix it with shredded chicken, drained chopped artichokes, the cheeses, and aromatics, spread everything into a greased dish, then bake until bubbly and golden. Total hands-on time: about 10–15 minutes if the chicken is already cooked; oven time: 30–35 minutes.

What you’ll need

• 2 cups fresh spinach (roughly 2 handfuls; stems removed) — swap for frozen spinach (thawed and well-drained) if needed
• 1 can artichoke hearts, drained and chopped
• 2 cups cooked chicken breast, shredded (rotisserie or poached chicken both work)
• 1 cup cottage cheese (full-fat for creamier texture; low-fat okay)
• 1 cup shredded mozzarella cheese (part-skim or whole milk)
• 1/2 cup grated Parmesan cheese (plus extra for topping)
• 2 cloves garlic, minced (or 1/2 tsp garlic powder)
• 1 teaspoon onion powder
• Salt and freshly ground black pepper to taste
• 1 tablespoon olive oil (for greasing the dish)

Notes: If you want a looser, creamier casserole, stir in 1/4–1/2 cup plain Greek yogurt or sour cream. To keep it lower-carb, serve over cauliflower rice or a bed of greens.

Step-by-step instructions

1. Preheat your oven to 350°F (175°C). Grease a 9×9-inch (or similar) baking dish with olive oil.
2. Roughly chop the fresh spinach (or squeeze excess water from thawed frozen spinach). Put it in a large mixing bowl.
3. Add the drained, chopped artichoke hearts and shredded cooked chicken to the bowl.
4. Stir in the cottage cheese, shredded mozzarella, grated Parmesan, minced garlic, onion powder, salt, and pepper until well combined. Taste and adjust seasoning.
5. Transfer the mixture into the greased baking dish and spread it into an even layer. Sprinkle a bit more Parmesan on top if you like a brown crust.
6. Bake for 30–35 minutes, or until the top is golden and bubbly. Let cool for 5–10 minutes before serving so it sets slightly.
   

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Best ways to enjoy it

Serve slices warm with a crisp green salad and crusty bread or garlic toast to soak up the cheesy juices. It’s also excellent spooned over steamed rice, roasted vegetables, or cauliflower mash for a lower-carb plate. For a lighter meal, pair with lemony arugula and a dollop of salsa or hot sauce for contrast.

Storage and reheating tips

Cool leftovers to room temperature (no more than 2 hours at room temp), then store them in an airtight container in the fridge for up to 4 days. To reheat, microwave a single portion for 1–2 minutes until hot, or reheat in a 350°F oven for 12–15 minutes covered with foil to prevent drying. To freeze: portion into freezer-safe containers and freeze up to 3 months. Thaw overnight in the fridge before reheating. Always reheat to an internal temperature of 165°F (74°C) for food safety.

Pro chef tips

• Use warm or slightly room-temperature shredded chicken so the casserole heats evenly and cooks faster.
• If using frozen spinach, squeeze out as much liquid as possible to avoid a watery casserole. A clean kitchen towel or cheesecloth works well.
• For a browned, bubbly top, switch the oven to broil for the last 1–2 minutes but watch closely to prevent burning.
• Want extra texture? Stir in 1/2 cup chopped roasted red peppers or top with panko mixed with a bit of melted butter before baking.
• If you need inspiration for bold flavors and substitutions, try ideas from this bold and cheesy chicken chilaquiles casserole and adapt spices.

Creative twists

• Mediterranean: Add chopped sun-dried tomatoes, Kalamata olives, and a sprinkle of oregano.
• Low-carb: Omit bread sides; serve over riced cauliflower and add extra Parmesan.
• Spicy: Mix in diced jalapeño or 1/2 tsp red pepper flakes.
• Veggie-forward: Fold in sautéed mushrooms or thinly sliced zucchini.
  

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Common questions

Q: Can I make this ahead of time?
A: Yes. Assemble the casserole, cover it tightly, and refrigerate for up to 24 hours before baking. If baking from cold, add 5–10 minutes to the oven time. For longer make-ahead, freeze unbaked in a foil pan; bake from frozen, covered, at 350°F for 45–55 minutes, then uncover and brown.

Q: Is cottage cheese necessary?
A: Cottage cheese adds moisture and protein without heavy cream. You can swap equal parts ricotta or Greek yogurt for similar creaminess and protein — flavor and texture will vary slightly.

Q: Can I use raw chicken?
A: You can use raw shredded chicken if you poach or roast it first. Putting raw chunked chicken into the casserole will risk drying or uneven cooking. Cook the chicken to an internal temperature of 165°F before shredding and mixing.

Q: How can I make it gluten-free?
A: The base recipe is naturally gluten-free if your Parmesan and other ingredients are certified gluten-free. Avoid adding breadcrumbs unless you use a gluten-free variety.

Q: How much protein is in a serving?
A: Protein varies by ingredient brands, but with 2 cups shredded chicken plus cottage cheese and cheeses, expect roughly 30+ grams of protein per generous serving — great for a high-protein meal plan.

Conclusion

This High-Protein Spinach Artichoke Chicken Casserole is an easy, crowd-pleasing dish that combines familiar flavors into a nourishing baked meal. It’s flexible, straightforward to prepare, and ideal for weeknights, meal prep, or feeding a family. Give it a try this week and tweak the add-ins to suit your taste — then come back to the blog for more comforting casserole ideas.

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Irresistible High-Protein Casserole

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• Author: elisa
• Total Time: 50 minutes
• Yield: 4 servings 1x
• Diet: High-Protein

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Description

A comforting, high-protein dish combining spinach, artichokes, and shredded chicken, baked with creamy cheeses.

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Ingredients

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• 2 cups fresh spinach (stems removed)
• 1 can artichoke hearts, drained and chopped
• 2 cups cooked chicken breast, shredded
• 1 cup cottage cheese
• 1 cup shredded mozzarella cheese
• 1/2 cup grated Parmesan cheese
• 2 cloves garlic, minced
• 1 teaspoon onion powder
• Salt and freshly ground black pepper to taste
• 1 tablespoon olive oil (for greasing the dish)

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Instructions

1. Preheat your oven to 350°F (175°C). Grease a 9×9-inch baking dish with olive oil.
2. Roughly chop the fresh spinach and place it in a large mixing bowl.
3. Add the drained, chopped artichoke hearts and shredded cooked chicken to the bowl.
4. Stir in the cottage cheese, shredded mozzarella, grated Parmesan, minced garlic, onion powder, salt, and pepper until well combined.
5. Transfer the mixture into the greased baking dish and spread it into an even layer. Optionally, sprinkle more Parmesan on top.
6. Bake for 30–35 minutes, until the top is golden and bubbly. Let cool for 5–10 minutes before serving.

Notes

For a looser casserole, stir in 1/4–1/2 cup Greek yogurt or sour cream. Serve over cauliflower rice for a lower-carb option.

• Prep Time: 15 minutes
• Cook Time: 35 minutes
• Category: Main Course
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 1 serving
• Calories: 450
• Sugar: 4g
• Sodium: 600mg
• Fat: 20g
• Saturated Fat: 8g
• Unsaturated Fat: 10g
• Trans Fat: 0g
• Carbohydrates: 30g
• Fiber: 5g
• Protein: 35g
• Cholesterol: 75mg