High Protein Chicken and Spinach Casserole for Hearty Family Dinners

30 min prep 3 min cook 1 servings
High Protein Chicken and Spinach Casserole for Hearty Family Dinners
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Prep Time
15 min
Cook Time
35 min
Servings
6

Why You'll Love This Recipe

✓ Power‑Packed Protein: Lean chicken breast and Greek yogurt deliver over 40 g of protein per serving, keeping everyone satisfied.
✓ One‑Pan Simplicity: All ingredients bake together, so cleanup is minimal and dinner is ready in under an hour.
✓ Veggie Boost: Fresh spinach adds iron, fiber, and a vibrant green color without overpowering the flavor.

When the kids ask for “something quick,” I reach for this high‑protein chicken and spinach casserole. It’s a comforting, cheesy bake that feels indulgent yet fuels the body with lean protein and leafy greens.

The secret is layering Greek yogurt with shredded cheese, creating a creamy sauce that stays moist without heavy cream. A quick sauté of garlic and onion builds depth, while the spinach folds in nutrients.

Perfect for busy weeknights, this dish can be assembled ahead, refrigerated, and popped into the oven when dinner time rolls around. It’s the ultimate blend of convenience and nutrition.

3 cups fresh spinach, roughly chopped If using frozen, thaw and squeeze out water.
1 cup low‑fat Greek yogurt Provides creaminess and extra protein.
1 ½ cups shredded mozzarella Half for mixing, half for topping.
½ cup grated Parmesan Adds salty depth.
1 medium onion, diced Provides aromatic base.
2 cloves garlic, minced Boosts savory flavor.
1 cup low‑sodium chicken broth Keeps the casserole moist.
1 tbsp olive oil For sautéing aromatics.
½ tsp smoked paprika Adds subtle warmth.
Salt & freshly ground black pepper To taste.

Instructions

1

Sauté aromatics

Heat olive oil in a large skillet over medium heat. Add diced onion and cook 3‑4 minutes until translucent. Stir in minced garlic and smoked paprika; sauté another minute until fragrant.

Pro Tip: Keep the heat moderate to avoid burning the garlic.
2

Brown the chicken

Add cubed chicken to the skillet, season with salt and pepper, and sear 5‑6 minutes until lightly browned on all sides. The chicken does not need to be fully cooked; it will finish in the oven.

3

Combine sauce

Stir in chicken broth, then lower the heat. Whisk in Greek yogurt until smooth, followed by half of the mozzarella and all of the Parmesan. Cook 2‑3 minutes, allowing the cheese to melt and the sauce to thicken.

4

Add spinach and transfer

Fold the chopped spinach into the mixture; it will wilt quickly. Transfer the entire skillet content to a 9‑x‑13‑inch baking dish, spreading evenly.

5

Bake to golden perfection

Sprinkle the remaining mozzarella over the top. Bake in a pre‑heated 375°F (190°C) oven for 20‑25 minutes, until the cheese is bubbling and lightly browned. Let rest 5 minutes before serving.

Expert Tips

Tip #1: Pre‑cook the spinach

If using fresh spinach, quickly wilt it in a dry pan, then squeeze out excess moisture. This prevents a watery casserole.

Tip #2: Use full‑fat Greek yogurt

Full‑fat yogurt creates a richer sauce and prevents curdling when combined with the hot broth.

Tip #3: Add a crunchy topping

Mix panko breadcrumbs with a little melted butter and sprinkle over the cheese before baking for extra texture.

Tip #4: Make ahead

Assemble the casserole up to the baking step, cover, and refrigerate up to 24 hours. Bake directly from the fridge, adding a few extra minutes.

Storage & Variations

Cool the casserole completely, then store in an airtight container. It keeps 3‑4 days in the fridge or 2 months frozen (unbaked). For a low‑carb twist, replace the mozzarella with shredded cheddar and add cauliflower rice to the base.

Nutrition

Per serving (≈1 ⅓ cup)

Calories
420 kcal
Protein
38 g
Carbs
12 g
Fat
22 g

Frequently Asked Questions

Yes. Thaw the frozen spinach, squeeze out excess water, and add it with the fresh spinach step. This saves prep time without affecting flavor.

The broth and yogurt create a moist base. Cover the dish with foil for the first 15 minutes of baking, then uncover to brown the cheese.

Substitute Greek yogurt with coconut‑based yogurt and use dairy‑free cheese. The texture changes slightly, but the protein content remains high.

Serve with a simple mixed green salad, roasted cauliflower, or a light quinoa pilaf to balance the richness of the casserole.

High Protein Chicken and Spinach Casserole for Hearty Family Dinners
Recipe Card

High Protein Chicken and Spinach Casserole for Hearty Family Dinners

Prep
30 min
Cook
3 min
Total
33 min
Servings
1
Category: Dinner
Cuisine: International
Difficulty: Easy
Course: Main
Quick Tips
  • Make ahead friendly
  • Freezer safe 3 months
  • Easily doubled
  • Customizable

Ingredients

Instructions

1
Sauté aromatics

Heat olive oil in a large skillet over medium heat. Add diced onion and cook 3‑4 minutes until translucent. Stir in minced garlic and smoked paprika; sauté another minute until fragrant....

2
Brown the chicken

Add cubed chicken to the skillet, season with salt and pepper, and sear 5‑6 minutes until lightly browned on all sides. The chicken does not need to be fully cooked; it will finish in the oven....

3
Combine sauce

Stir in chicken broth, then lower the heat. Whisk in Greek yogurt until smooth, followed by half of the mozzarella and all of the Parmesan. Cook 2‑3 minutes, allowing the cheese to melt and the sauce ...

4
Add spinach and transfer

Fold the chopped spinach into the mixture; it will wilt quickly. Transfer the entire skillet content to a 9‑x‑13‑inch baking dish, spreading evenly....

5
Bake to golden perfection

Sprinkle the remaining mozzarella over the top. Bake in a pre‑heated 375°F (190°C) oven for 20‑25 minutes, until the cheese is bubbling and lightly browned. Let rest 5 minutes before serving....

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