1. Preheat oven to 375°F (190°C) and grease a 9×13-inch baking dish.
2. Cook ground turkey in a skillet over medium heat until no longer pink, breaking apart as it goes, about 7-8 minutes. Drain any excess fat.
3. In a large bowl, combine cooked turkey, thoroughly squeezed spinach, ricotta, half the Parmesan, half the mozzarella, egg, garlic powder, onion powder, basil, oregano, salt, and pepper. Mix until cohesive and well combined.
4. Spread a thin layer of marinara across the bottom of the prepared baking dish.
5. Layer lasagna noodles over the sauce, then spread half the turkey and spinach filling evenly to the edges.
6. Add another layer of marinara, noodles, and the remaining filling.
7. Finish with the final noodle layer, a generous pour of remaining marinara, and scatter remaining mozzarella and Parmesan over everything.
8. Cover tightly with foil and bake for 30 minutes.
9. Remove foil and bake uncovered for 15 more minutes until cheese is bubbly and gloriously golden.
10. Rest for 10-15 minutes before slicing — this step is not optional if you want clean pieces.

Nutrition Information (Per Serving):

• Calories: 445
• Carbohydrates: 38g
• Protein: 36g
• Fat: 17g
• Fiber: 4g
• Sodium: 780mg
• Key vitamins/minerals: Calcium (40% DV from cheese), Vitamin A (45% DV from spinach), Iron (18% DV), Vitamin K (120% DV from spinach)
• Note: Spinach contributes exceptional vitamin K and vitamin A while three-cheese combination delivers significant calcium — a genuinely nourishing comfort food that doesn’t ask you to compromise.

Notes:

• Squeeze the spinach until you absolutely cannot get another drop out — this is the single most important step for a lasagna that slices cleanly
• Rest the full 10-15 minutes before cutting — the filling sets during this time and makes clean slices possible
• Don’t hold back on marinara — generous sauce layers are what keep lasagna moist through the long bake

Storage Tips:

• Refrigerate covered for up to 4 days
• Reheat in a 350°F oven covered with foil for 20 minutes for best texture
• Freeze assembled unbaked for up to 3 months, or freeze individual baked slices for up to 2 months

Serving Suggestions:

• Serve with a classic Caesar salad or simple arugula salad to cut through the richness
• Crusty garlic bread alongside for the table is essentially mandatory
• A simple roasted vegetable side like zucchini or asparagus completes the meal beautifully
• Serve directly from the baking dish at the table for maximum comfort food presentation

Mix It Up (Recipe Variations):

• Mushroom Addition: Layer thinly sliced sautéed mushrooms between the filling layers for earthy depth that makes the lasagna feel considerably more complex and restaurant-quality
• White Sauce Version: Replace half the marinara with a simple béchamel for a stunning red-and-white lasagna that looks and tastes like something from a proper Italian kitchen
• Gluten-Free Version: Use gluten-free lasagna noodles — widely available and work identically in this recipe with no technique adjustments needed

What Makes This Recipe Special: The egg in the ricotta filling is the structural ingredient that makes this turkey and spinach lasagna slice cleanly and hold its layers rather than sliding apart on the plate — it binds the ricotta, turkey, and spinach into something cohesive that sets firmly during baking. Squeezing every drop of moisture from the frozen spinach before it goes into the filling is the preparation step that makes the difference between a tight, well-structured lasagna and a watery one that collapses the moment you cut it.