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High Protein Chicken and Rice Casserole - A Comforting, Meal-Prep Friendly Classic

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Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 6 servings
Ingredients Method

Ingredients
  

  • Chicken: 1.5 to 2 pounds boneless, skinless chicken breasts (or thighs)
  • Rice: 1.5 cups uncooked long-grain brown rice (or white rice; see notes)
  • Broth: 3.5 cups low-sodium chicken broth
  • Greek yogurt: 1 cup plain, 2% or 0% for extra protein
  • Cheese: 1 cup shredded part-skim mozzarella or Monterey Jack
  • Parmesan: 1/3 cup grated (optional but delicious)
  • Vegetables: 1 medium onion (diced), 2 cups broccoli florets (fresh or frozen), 1 cup diced carrots, 1 cup peas (frozen is fine)
  • Aromatics: 3 cloves garlic (minced)
  • Olive oil: 1 tablespoon
  • Seasonings: 1 teaspoon smoked paprika, 1 teaspoon dried thyme, 1 teaspoon onion powder, 1/2 teaspoon garlic powder
  • Salt and pepper: To taste (start with 1 teaspoon salt, 1/2 teaspoon black pepper)
  • Optional boosters: 1 tablespoon Dijon mustard, 1 tablespoon nutritional yeast, red pepper flakes for heat
  • Optional topping: 1/2 cup whole-wheat panko or crushed whole-grain crackers mixed with 1 teaspoon olive oil

Method
 

  1. Preheat and prep: Heat oven to 375°F (190°C). Lightly grease a 9x13-inch casserole dish. Chop veggies and mince garlic.
  2. Season the chicken: Cut chicken into bite-size pieces. Toss with 1/2 teaspoon salt, 1/4 teaspoon pepper, smoked paprika, onion powder, and garlic powder.
  3. Quick sauté (flavor boost): In a large skillet, warm olive oil over medium heat. Sauté onion and carrots 3–4 minutes until slightly soft. Add garlic for 30 seconds. This step builds flavor and helps veggies cook evenly.
  4. Combine in the dish: Add rice, sautéed veggies, broccoli, peas, thyme, and remaining salt and pepper to the casserole dish. Stir to distribute evenly.
  5. Add liquids: Pour chicken broth over the rice mixture. Stir gently to make sure all rice is submerged. Nestle the seasoned chicken pieces evenly on top. Do not stir in the chicken; leaving it on top helps it cook through without drying out.
  6. Cover and bake: Tightly cover with foil and bake for 40 minutes if using white rice, 55–60 minutes if using brown rice. Check that most of the liquid is absorbed and rice is tender.
  7. Make the creamy boost: In a bowl, whisk Greek yogurt with Dijon mustard (if using) and 2 tablespoons hot broth from the pan to temper it. This keeps the yogurt from curdling.
  8. Finish the casserole: Remove foil. Gently fold in the tempered yogurt and half the shredded cheese. If using Parmesan and nutritional yeast, add those too. Smooth the top.
  9. Add topping and melt: Sprinkle remaining cheese over the surface. If you like a crunch, mix panko with a little olive oil and scatter it over part or all of the top. Return to the oven, uncovered, for 8–10 minutes, until cheese is melted and lightly golden.
  10. Rest and serve: Let the casserole rest 5–10 minutes. This helps the rice set and keeps servings tidy. Taste and adjust seasoning with a pinch of salt, pepper, or red pepper flakes.