1. Crank your oven to 375°F (190°C) and give a 9×13-inch casserole dish a good spray with cooking oil. Start cooking your pasta according to package directions until al dente.
2. Heat a large skillet over medium heat. Add the ground turkey and cook, breaking it up with a wooden spoon, until it’s nicely browned, about 6-7 minutes. Leave a little fat in the pan for moisture.
3. Toss in the diced onion, minced garlic, and chopped bell pepper. Cook, stirring occasionally, until the vegetables soften and the onions turn translucent, about 5-6 minutes.
4. Stir in the diced tomatoes, tomato paste, chicken broth, salt, black pepper, and that fresh chopped rosemary. Let everything simmer together for about 10 minutes so the flavors meld and the sauce reduces slightly. Give it a taste and adjust the seasoning.
5. In your prepared casserole dish, layer half of the cooked, drained pasta on the bottom. Spread half of the turkey mixture evenly over the pasta.
6. Repeat with the remaining pasta and turkey mixture, creating nice even layers. This ensures every bite has the perfect ratio.
7. Pile that shredded mozzarella cheese on top, making sure to cover the whole surface—this is where the magic happens.
8. Cover the dish with foil and slide it into the oven. Bake for 20 minutes covered.
9. Remove the foil and bake for an additional 10 minutes until the cheese is golden, bubbly, and practically calling your name. Keep an eye on it during these last 10 minutes.
10. Let the casserole cool for about 10 minutes before serving (if you can wait that long). This helps everything set up and makes serving so much cleaner.

Nutrition Information (Per Serving):

• Calories: 340
• Carbohydrates: 28g
• Protein: 26g
• Fat: 14g
• Fiber: 3g
• Sodium: 680mg
• Calcium: 165mg (13% DV)
• Iron: 2.6mg (14% DV)
• Vitamin C: 35mg (39% DV from bell pepper)

This casserole provides excellent protein from the turkey and calcium from the cheese, making it a well-balanced, satisfying meal.

Notes:

• Don’t use super lean ground turkey or it’ll turn dry and sad.
• Fresh rosemary is worth it—chop it really fine so it distributes evenly.
• Cook the pasta al dente since it’ll cook more in the oven.
• Let the casserole rest for 10 minutes after baking so it sets up properly.
• Every oven runs differently, so check the cheese at 8 minutes after removing the foil.

Storage Tips:

• Store in an airtight container in the fridge for up to 4 days.
• Freezes beautifully (unbaked) for up to 3 months—wrap tightly in plastic and foil.
• Reheat in the oven at 350°F for about 20 minutes, covered with foil to prevent drying out.
• Don’t microwave if you can help it—the pasta gets weird and the cheese turns rubbery.

Serving Suggestions:

• Simple green salad: Fresh, crisp greens with Italian vinaigrette balance out the rich, hearty casserole perfectly
• Garlic bread: For soaking up any extra tomatoey goodness from the bottom of the dish
• Roasted vegetables: Zucchini, broccoli, or green beans add color and nutrition to the plate
• Fresh basil: A sprinkle of fresh basil on top adds brightness and Italian flair

Mix It Up (Recipe Variations):

• Mediterranean Turkey Casserole: Add 1/2 cup sliced Kalamata olives and 1/4 cup chopped sun-dried tomatoes, then use half feta and half mozzarella for Greek-inspired flavor.
• Spicy Rosemary Turkey Bake: Add 1/2 teaspoon red pepper flakes to the turkey mixture and use pepper jack cheese instead of mozzarella for a kick of heat.
• Veggie-Packed Version: Add sautéed mushrooms and fresh spinach between the layers for extra nutrients without extra effort.
• Low-Carb Rosemary Bake: Swap pasta for spiralized zucchini (squeeze out excess moisture first) to cut the carbs while keeping all that delicious flavor.

What Makes This Recipe Special:

This turkey and rosemary stem casserole celebrates the bold, aromatic flavor of fresh rosemary, an herb that’s been used in Mediterranean cooking for centuries. The technique of layering pasta and sauce ensures even distribution of flavors while creating those irresistible crispy edges that everyone fights over. Fresh rosemary contains beneficial compounds with antioxidant properties and provides that distinctive woodsy aroma that makes this casserole smell incredible while baking. It’s comfort food that comes together quickly, requires minimal cleanup, and delivers maximum satisfaction with every bite.