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Prep Time: 15 minutes
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Cook Time: 30 minutes
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Broil Time: 3 minutes
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Total Time: 48 minutes
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Yield: 4 servings
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Course: Main Course
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Cuisine: Mediterranean
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Diet: Low-Carb, Keto-Friendly, High-Protein, Gluten-Free
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Cooking Intensity / Difficulty Level: Low to Moderate (Beginner-Friendly)
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Technique Requirements: Basic knife slicing, seasoning rub, and single-dish baking.
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Heat Levels: Roasting at 200°C (400°F); Finishing broil at High (230°C / 450°F).
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Equipment Needed
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9×13-inch (23×33 cm) ceramic or glass baking dish
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Large cutting board and chef’s knife
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Small mixing bowl
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Paper towels (for patting chicken and draining zucchini)
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Meat thermometer
Ingredients
The Chicken & Marinade
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680 g (1.5 lbs) boneless, skinless chicken breasts (cut into uniform cutlets or strips)
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30 ml (2 tbsp) extra virgin olive oil
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10 ml (2 tsp) fresh lemon juice
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3 cloves fresh garlic, minced
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5 g (1 tsp) dried oregano
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3 g (1/2 tsp) dried basil
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2 g (1/2 tsp) dried thyme
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3 g (1/2 tsp) smoked paprika
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4 g (3/4 tsp) sea salt
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2 g (1/2 tsp) freshly cracked black pepper
The Mediterranean Vegetable Medley
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2 medium fresh zucchinis (approx. 400 g), cut into 0.5 cm thick rounds or half-moons
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200 g (1.5 cups) cherry or grape tomatoes, halved
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75 g (1/2 cup) Kalamata olives, pitted and halved
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45 g (1/3 cup) red onion, thinly sliced
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15 ml (1 tbsp) extra virgin olive oil
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2 g (1/4 tsp) sea salt
The Cheesy Golden Topping
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150 g (1.5 cups) low-moisture whole-milk mozzarella cheese, shredded
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60 g (1/2 cup) Greek feta cheese, crumbled
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20 g (1/4 cup) Parmesan cheese, finely grated
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15 g (2 tbsp) fresh Italian flat-leaf parsley, finely chopped (for garnish)
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Fresh basil leaves, thinly sliced for serving
Step-by-Step Instructions
Step 1: Prep the Oven & Baking Dish
Preheat your oven to 200°C (400°F) with the baking rack positioned in the center. Lightly grease a 9×13-inch baking dish with 1 teaspoon of olive oil or non-stick olive oil spray.
Step 2: Season the Chicken
Pat the chicken cutlets thoroughly dry with paper towels to ensure spices adhere well. In a small bowl, combine olive oil, lemon juice, minced garlic, oregano, basil, thyme, smoked paprika, salt, and black pepper. Rub this mixture evenly over both sides of each chicken piece. Arrange the seasoned chicken in a single layer across the base of the prepared baking dish.
Step 3: Layer the Vegetables
In a mixing bowl, toss the sliced zucchini and halved cherry tomatoes with 1 tablespoon of olive oil and 1/4 teaspoon of salt. Scatter the zucchini evenly over and around the chicken. Distribute the cherry tomatoes, halved Kalamata olives, and thinly sliced red onions across the top, tucking pieces between the chicken slices for even roasting.
Step 4: Add the Cheese
Evenly sprinkle the shredded mozzarella across the chicken and vegetables. Scatter the crumbled feta cheese over the top, then finish with the grated Parmesan. The combination of mozzarella’s melting properties, feta’s tangy brine, and Parmesan’s salty bite creates a multi-layered crust.
Step 5: Bake to Perfection
Place the dish uncovered into the preheated oven. Bake at 200°C (400°F) for 25 to 30 minutes. The dish is ready when the chicken registers an internal temperature of 74°C (165°F) on an instant-read meat thermometer and the zucchini is tender-crisp.
Step 6: Broil for a Golden Crust
Switch the oven setting to Broil (High / 230°C) for 2 to 3 minutes. Watch closely to prevent burning; remove once the cheese is bubbling with golden-brown spots.
Step 7: Rest, Garnish & Serve
Remove the baking dish from the oven and allow it to rest for 5 minutes. This lets the natural cooking juices redistribute into the chicken fibers. Garnish generously with freshly chopped flat-leaf parsley and torn basil leaves before plating.
Pro Chef Tips & Troubleshooting
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Preventing Excess Moisture: Zucchini naturally contains over 90% water. To maintain a rich sauce rather than a watery bake, slice the zucchini 15 minutes ahead, sprinkle lightly with salt on a cutting board lined with paper towels, and pat the surface moisture off before layering.
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Even Cooking: Ensure chicken breasts are trimmed to a uniform thickness (around 1.5 cm / 0.5 inch). If using large, thick breasts, slice them horizontally into cutlets or pound them gently with a meat mallet.
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Storage & Reheating: Store leftovers in an airtight glass container in the refrigerator for up to 4 days. Reheat in a preheated oven or toaster oven at 180°C (350°F) for 10–12 minutes to retain cheese crispness, or microwave individual portions on medium power for 2 minutes.
Nutrition Information
Serving Size: 1 serving (approx. 1/4 of casserole)
| Metric | Amount per Serving | % Daily Value* |
| Calories | 395 kcal | — |
| Total Fat | 21 g | 27% |
| Saturated Fat | 8 g | 40% |
| Trans Fat | 0 g | — |
| Cholesterol | 115 mg | 38% |
| Sodium | 680 mg | 30% |
| Total Carbohydrates | 8 g | 3% |
| Dietary Fiber | 2 g | 7% |
| Sugars | 4 g | — |
| Net Carbohydrates | 6 g | — |
| Protein | 43 g | 86% |
| Vitamin D | 0.2 mcg | 1% |
| Calcium | 320 mg | 25% |
| Iron | 2.1 mg | 12% |
| Potassium | 720 mg | 15% |