1. Preheat the oven to 375°F (190°C) and grease a casserole dish well.
2. Cook the ground turkey in a skillet over medium heat until browned, breaking it up as it cooks. Drain any excess fat and pat dry with a paper towel if needed. Let cool slightly.
3. In a large bowl, combine the cooked turkey, sliced cucumbers, Greek yogurt, Parmesan, garlic, oregano, salt, and pepper. Mix until everything is evenly coated.
4. Spread the mixture evenly into the prepared casserole dish.
5. In a small bowl, combine the breadcrumbs and chopped parsley. Sprinkle evenly over the top and press down gently so it sticks.
6. Cover with foil and bake for 25 minutes.
7. Remove the foil and bake for another 10 minutes until the top is golden brown and edges are bubbling. If your oven runs cool, give it an extra 3 to 5 minutes — keep an eye on it.
8. Let the casserole rest for 5 minutes before serving (if you can wait that long).

Nutrition Information (Per Serving):

• Calories: 310
• Carbohydrates: 12g
• Protein: 34g
• Fat: 13g
• Fiber: 1g
• Sodium: 560mg
• Key vitamins/minerals: Vitamin K (25% DV), Calcium (22% DV), Vitamin C (12% DV), Potassium (18% DV) Note: Greek yogurt adds a meaningful protein and calcium boost, making this a well-rounded, lighter alternative to heavy cream-based casseroles.

Notes:

• Seriously, drain the turkey well — excess fat is the main reason this dish turns watery.
• Salt and pat your cucumber slices dry before mixing for an even better texture in the final casserole.
• Full-fat or 2% Greek yogurt only — nonfat separates and makes the dish soupy.
• Every oven runs a little differently, so trust your eyes on the topping color more than the clock.

Storage Tips:

• Refrigerate leftovers in an airtight container for up to 3 days.
• Reheat covered in a 350°F oven for about 15 minutes to keep the breadcrumb topping crisp.
• Do not freeze — the yogurt-based filling becomes grainy and watery after freezing.
• Avoid microwaving if you can help it; it softens the crust significantly.

Serving Suggestions:

• Served alongside steamed rice or warm pita bread for a complete meal
• With a simple tomato and cucumber salad to keep the Mediterranean theme going
• Over a bed of couscous for a heartier, more filling plate
• With a wedge of lemon squeezed over the top right before serving for a bright, fresh finish

Mix It Up (Recipe Variations):

• Mediterranean Turkey Casserole: Add sliced kalamata olives and crumbled feta on top before the breadcrumb layer for a briny, tangy Greek-inspired version.
• Seasonal Garden Casserole: Swap one cucumber for thinly sliced zucchini to use up summer produce and add more texture.
• Spicy Turkey Casserole: Add 1/2 tsp red pepper flakes into the turkey mixture for a gentle kick that pairs beautifully with the cool yogurt.
• Gluten-Free Version: Replace breadcrumbs with crushed gluten-free crackers or almond flour mixed with parsley — crisps up just as nicely.

What Makes This Recipe Special:

Using Greek yogurt instead of heavy cream keeps this turkey and cucumber casserole lighter and higher in protein without sacrificing the creamy, satisfying texture that makes a great casserole. Baking the cucumbers transforms them from raw and sharp into tender, mild layers that absorb all the surrounding flavor beautifully. The herbed breadcrumb crust adds just enough crunch to make every forkful a perfect combination of creamy filling and golden top.