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High Protein Chicken Pot Pie Casserole - Comfort Food With a Lean, Hearty Twist

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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 servings
Ingredients Method

Ingredients
  

  • Chicken: 1.75–2 pounds boneless, skinless chicken breasts (or use rotisserie chicken, about 5–6 cups cooked and chopped)
  • Veggies: 1 medium onion (diced), 3 medium carrots (diced), 2 stalks celery (diced), 2 cups frozen peas, 1 cup frozen corn, 2 cloves garlic (minced)
  • Fat: 2 tablespoons olive oil or avocado oil, plus cooking spray
  • Thickener: 3 tablespoons all-purpose flour (or 1:1 gluten-free blend)
  • Liquid: 2 cups low-sodium chicken broth, 1 cup low-fat milk (or unsweetened almond milk)
  • Protein boosters: 1/2 cup plain nonfat Greek yogurt or 4 ounces light cream cheese (softened)
  • Seasonings: 1 teaspoon kosher salt (to taste), 1/2 teaspoon black pepper, 1 teaspoon dried thyme, 1/2 teaspoon dried rosemary, 1/2 teaspoon paprika, pinch of red pepper flakes (optional)
  • Fresh finish: 2 tablespoons chopped fresh parsley or chives
  • Topping (choose one): High-protein biscuit topping: 1 cup white whole wheat flour, 1/2 cup unflavored whey or pea protein powder, 2 teaspoons baking powder, 1/2 teaspoon salt, 2 tablespoons cold light butter, 3/4 cup low-fat milk
  • Shortcut high-protein wrap topping: 4–6 high-protein tortillas, lightly brushed with oil and cut into strips
  • Light puff pastry option: 1 sheet light puff pastry (not high protein, but classic and easy)

Method
 

  1. Cook the chicken: Poach breasts in simmering salted water for 12–15 minutes until cooked through. Rest 5 minutes, then chop or shred. Or use pre-cooked rotisserie chicken to save time.
  2. Preheat and prep: Heat oven to 400°F (205°C). Lightly grease a 9x13-inch baking dish.
  3. Sauté aromatics: Warm oil in a large skillet over medium heat. Add onion, carrots, and celery. Cook 6–8 minutes until softened. Stir in garlic for 30 seconds.
  4. Build the roux: Sprinkle flour over the veggies. Stir for 1 minute to coat and cook off raw flour taste.
  5. Add liquids: Slowly whisk in chicken broth, then milk. Simmer 3–5 minutes, stirring, until the sauce thickens to a gravy-like consistency.
  6. Season and enrich: Stir in salt, pepper, thyme, rosemary, paprika, and red pepper flakes if using. Off the heat, whisk in Greek yogurt or light cream cheese until smooth.
  7. Add chicken and veggies: Fold in shredded chicken, peas, and corn. Taste and adjust seasoning. Stir in fresh parsley or chives.
  8. Transfer to dish: Pour the filling into the prepared baking dish and spread evenly.
  9. Make your topping: Biscuit topping: In a bowl, whisk flour, protein powder, baking powder, and salt. Cut in cold light butter until sandy. Stir in milk just until combined. Dollop spoonfuls over the filling.
  10. Tortilla topping: Toss tortilla strips with a teaspoon of oil and a pinch of salt. Arrange in a shingled layer over the filling.
  11. Puff pastry: Place rolled pastry over the filling, trim edges, and cut a few slits for steam.
  12. Bake: Place on the center rack and bake 20–25 minutes for tortilla or biscuit topping (30 minutes for puff pastry), until the topping is golden and the filling is bubbling at the edges.
  13. Rest and serve: Let the casserole sit 10 minutes to set. Garnish with extra herbs. Serve warm.