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Italian Chicken Meal Prep Casserole (Keto, with Vegetarian Option) Recipe

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This Italian Chicken Meal Prep Casserole is a flavorful and easy-to-make dish perfect for using leftover or rotisserie chicken. Featuring a combination of zucchini, spinach, cherry tomatoes, and creamy Italian-seasoned chicken, it offers a comforting meal that’s ideal for meal prepping, kid-friendly, and customizable with a vegetarian option. The casserole bakes to golden goodness and can be frozen for up to 3 months.

  • Total Time: 40 minutes
  • Yield: 4-5 servings

Ingredients

Chicken Mixture

  • 1 lb cooked chicken or uncooked boneless chicken strips (to be cooked in 1 Tablespoon olive oil)
  • ⅓ cup cultured sour cream or paleo mayo
  • 1 Tablespoon Italian seasoning (preferably with garlic powder and oregano)
  • Kosher salt and black pepper, to taste

Vegetables

  • 1 to 2 cups zucchini, sliced or spiralized (pressed with paper towel to remove extra water)
  • 2 cups spinach leaves, torn
  • 1 ½ cups fresh cherry tomatoes, diced (drain excess juice) or 14 oz canned tomatoes with Italian herbs

Optional Toppings

  • Grated Parmesan cheese for topping casserole

Instructions

  1. Prepare Zucchini (Optional): To reduce excess water, lightly bake zucchini slices at 400°F for 10 minutes. Press spiralized zucchini with paper towels if using noodles to remove excess moisture.
  2. Preheat Oven and Prepare Dish: Preheat oven to 350°F and lightly oil the casserole dish or meal prep container. If meal prepping without baking, this step can be skipped.
  3. Mix Chicken: Toss the cooked or cooked-through chicken strips with sour cream or paleo mayo and Italian seasoning. Season with salt and pepper. Set aside.
  4. Layer Vegetables: Arrange zucchini and spinach at the bottom of the casserole dish. Reserve some spinach for topping. Ensure zucchini noodles are drained well before layering.
  5. Add Chicken Mixture: Evenly spread the Italian-seasoned chicken mixture over the bed of zucchini and spinach.
  6. Top with Tomatoes and Spinach: Spoon diced cherry tomatoes over the chicken mixture. Add the reserved spinach leaves on top.
  7. Optional Cheese and Seasoning: Sprinkle grated Parmesan cheese over the top if desired. Adjust salt and pepper to taste.
  8. Bake: Bake the casserole at 350°F for 25-30 minutes or until the top is golden brown.
  9. Cool and Store: If meal prepping, allow the casserole to cool completely before freezing. It can be frozen for up to 3 months.

Notes

  • Pre-baking zucchini helps remove excess water to prevent soggy casserole.
  • Use cooked chicken or cook raw chicken strips in 1 tablespoon olive oil before mixing with sour cream and seasoning.
  • Drain excess liquid from tomatoes and zucchini noodles for best texture.
  • Vegetarian option: substitute chicken with plant-based protein or use extra vegetables.
  • Parmesan cheese topping is optional but adds a nice golden crust and flavor.
  • To reheat frozen casserole, thaw overnight in the refrigerator and bake at 350°F until warmed through.
  • Author: Daisy
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Category: Main Dish
  • Method: Baking
  • Cuisine: Italian
  • Diet: Low Carb