This high protein chicken casserole clocks

Prep Time: 20 minutes | Cook Time: 35 minutes | Total Time: 55 minutes
Yield: 6 hearty servings
Cuisine: Healthy Comfort Food
Diet: High-Protein, Gluten-Free
Intensity: Beginner-Friendly, One-Pot Wonder

This is not your average casserole. Ditch the canned soup and heavy cream. Our High-Protein, One-Pot Chicken & Quinoa Casserole delivers the ultimate comforting, creamy texture you crave, but with a clean, nutrient-dense profile. It’s a complete meal packed with lean protein, fiber-rich quinoa, and vibrant vegetables, all cooked in a single pot for maximum flavor and minimal cleanup. It’s meal-prep magic, family dinner gold, and gym-fuel, all in one delicious, bubbling dish.

Ingredients

• 1.5 lbs (680g) boneless, skinless chicken breasts, cut into 1-inch cubes

• 1 tbsp olive oil

• 1 medium yellow onion, diced

• 4 cloves garlic, minced

• 1 red bell pepper, diced

• 1 cup (180g) uncooked quinoa, rinsed well

• 2 cups (480ml) low-sodium chicken broth

• 1 cup (240ml) unsweetened almond milk (or any milk)

• 1 cup (140g) frozen peas

• 4 oz (115g) reduced-fat cream cheese, softened & cubed

• 1 cup (110g) shredded part-skim mozzarella cheese, divided

• ½ cup (50g) grated Parmesan cheese, divided

• 1 tsp smoked paprika

• 1 tsp dried thyme

• ½ tsp onion powder

• Salt and freshly ground black pepper to taste

• Fresh parsley or chives, chopped (for garnish)

Equipment

• Large, deep oven-safe skillet or Dutch oven (at least 4 quarts)

• Wooden spoon

• Measuring cups and spoons

• Cutting board & knife

Instructions

1. Sear the Chicken (5 minutes):
Preheat your oven to 375°F (190°C). Pat the chicken cubes dry and season generously with salt and pepper. Heat the olive oil in your large oven-safe skillet over medium-high heat. Add the chicken in a single layer and sear for 2-3 minutes per side, until golden brown but not fully cooked through. Remove the chicken to a clean plate and set aside.

2. Sauté the Aromatics & Veggies (5 minutes):
In the same skillet, reduce heat to medium. Add the diced onion and bell pepper. Sauté for 4-5 minutes until softened. Add the minced garlic and cook for 1 more minute until fragrant.

3. Build the Creamy Base (2 minutes):
Stir in the rinsed quinoa, smoked paprika, thyme, and onion powder. Toast for 1 minute, stirring constantly. Pour in the chicken broth and almond milk, scraping up any flavorful browned bits from the bottom of the pan. Bring to a gentle simmer.

4. Combine & Bake (25 minutes):
Return the seared chicken (and any juices) to the skillet. Stir well. Cover the skillet tightly with a lid or aluminum foil and carefully transfer it to the preheated oven. Bake for 20 minutes.

5. Add Creaminess & Finish (10 minutes):
Remove the skillet from the oven (careful, the handle is hot!). The quinoa should be tender and have absorbed most of the liquid. Stir in the frozen peas, cubed cream cheese, ½ cup of mozzarella, and ¼ cup of Parmesan. Stir vigorously until the cream cheese melts and creates a luxuriously creamy sauce. Taste and adjust seasoning with salt and pepper.

6. Broil to Perfection (2-3 minutes):
Sprinkle the remaining ½ cup mozzarella and ¼ cup Parmesan evenly over the top. Return the skillet to the oven, uncovered, and broil on high for 2-3 minutes, or until the cheese is bubbly and spotty golden brown.

7. Rest & Serve:
Let the casserole rest for 5-10 minutes before serving. This allows the sauce to thicken perfectly. Garnish with fresh parsley or chives.

Chef’s Notes & Pro Tips

• Rinse Your Quinoa: This is non-negotiable! Rinsing removes quinoa’s natural bitter coating (saponin).

• Customize Your Veggies: Spinach (stir in at the end), broccoli florets, or chopped mushrooms are excellent additions. Add hardy veggies in step 2.

• Make it Spicy: Add a pinch of red pepper flakes with the spices or stir in a diced jalapeño with the bell pepper.

• Storage & Reheating: Store cooled leftovers in an airtight container in the refrigerator for up to 4 days. Reheat gently in the microwave with a splash of broth or milk to refresh the creamy texture. This casserole freezes beautifully for up to 3 months. Thaw overnight in the fridge before reheating.

Nutrition Information (Per Serving)

• Calories: 445

• Total Fat: 16g

• Saturated Fat: 7g

• Cholesterol: 115mg

• Sodium: 580mg*

• Total Carbohydrates: 30g

• Dietary Fiber: 4g

• Sugars: 5g

• Protein: 42g

• Vitamin D: 2% DV

• Calcium: 35% DV

• Iron: 20% DV

• Potassium: 15% DV