Looking for a hearty, wholesome dinner that won’t weigh you down? This Ground Turkey Zucchini Casserole is exactly what your weeknight rotation needs. Light, filling, and packed with flavor, it combines lean ground turkey, tender zucchini slices, melty cheese, and aromatic herbs into a cozy, satisfying one-dish meal. Whether you’re feeding your family, meal-prepping for the week, or just craving something savory and simple, this casserole is a delicious way to enjoy a balanced dinner that’s loaded with protein and vegetables. Plus, it’s naturally gluten-free and easy to modify to suit different diets.
Why You’ll Love This Recipe
This isn’t just another healthy casserole—it’s one you’ll actually want to make again and again. Here’s why:
- Low-Carb and High-Protein: Lean ground turkey and fresh zucchini keep things light but filling.
- One Dish, Minimal Mess: Everything gets layered in one pan for easy cleanup.
- Perfect for Meal Prep: Tastes just as good (if not better) the next day and reheats like a dream.
- Family-Approved: Even picky eaters love the cheesy, Italian-style flavors.
- Customizable: You can toss in extra veggies, use different cheeses, or swap out the protein.
This casserole is simple comfort food at its best—without the heavy ingredients.
Ingredients You’ll Need
Tip: You’ll find the full list of ingredients and measurements in the recipe card below.
Here’s everything you need to bring this tasty casserole to life:
- 1 lb ground turkey – Lean and protein-rich, it forms the hearty base of the dish.
- 2 medium zucchinis, sliced – Provides texture, fiber, and moisture.
- 1 cup shredded mozzarella cheese – Melts beautifully on top for a gooey, golden finish.
- 1/2 cup chopped onion – Adds sweet, savory depth.
- 2 cloves garlic, minced – Classic flavor booster.
- 1 can (14 oz) diced tomatoes, drained – Brings in juiciness and tang.
- 1 tsp dried Italian herbs – A savory blend that includes oregano, basil, thyme, etc.
- 1/2 tsp salt – Adjust to taste.
- 1/4 tsp black pepper – For just a hint of heat.
- 1 tbsp olive oil – Used for sautéing and adding richness.
Simple pantry staples and fresh veggies come together in this fuss-free, flavorful dish.
Let’s Get Started
Let’s walk through the easy steps to make this zucchini and turkey casserole from scratch:
Step 1: Preheat and Prep
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish with olive oil or nonstick spray and set it aside.
Step 2: Cook the Turkey Mixture
Heat 1 tbsp olive oil in a large skillet over medium heat. Add the chopped onion and cook for 2–3 minutes until softened. Add the minced garlic and cook for another 30 seconds, stirring constantly.
Add the ground turkey, breaking it up with a spoon or spatula as it cooks. Cook until browned and no longer pink—about 5–7 minutes. Stir in the diced tomatoes, Italian herbs, salt, and pepper. Let the mixture simmer for 3–5 minutes so the flavors can meld.
Step 3: Slice the Zucchini
While the turkey simmers, slice your zucchinis into thin rounds (about ¼ inch thick). You don’t need to peel them—just wash and slice.
Step 4: Assemble the Casserole
In your greased baking dish, layer half the sliced zucchini across the bottom. Spoon half of the turkey mixture over the zucchini, spreading it evenly. Repeat with the remaining zucchini and turkey mixture.
Sprinkle the shredded mozzarella cheese evenly over the top layer.
Step 5: Bake and Serve
Cover the casserole with foil and bake for 20 minutes. Then, remove the foil and bake for an additional 10–15 minutes, until the cheese is melted and bubbly and the zucchini is tender.
Let it cool slightly before serving. Garnish with fresh herbs like parsley or basil if desired.
Servings and Pairing
This recipe serves 4 generous portions as a main dish, or 6 smaller servings if paired with sides.
Great Pairings:
- Garlic bread or crusty whole-grain rolls
- Side salad with balsamic vinaigrette
- Cauliflower rice or quinoa for a grain-free option
- Roasted veggies like carrots or bell peppers for more color and crunch
It’s hearty enough to stand alone but plays well with all your favorite sides.
Variations
There are so many ways to make this casserole your own:
- Add more veggies: Layer in spinach, mushrooms, or bell peppers for more texture and nutrients.
- Swap the cheese: Try cheddar, provolone, or dairy-free cheese if needed.
- Make it spicy: Add red pepper flakes or chopped jalapeño to the turkey mixture.
- Use ground chicken or beef: Works just as well if you don’t have turkey on hand.
- Make it keto: Stick with low-carb ingredients and add extra cheese or cream for richness.
Get creative with what’s in your fridge—it’s hard to go wrong with a base this tasty.
Storage Tips
This casserole keeps really well and is perfect for leftovers.
- Refrigerate: Store in an airtight container for up to 4 days.
- Reheat: Warm in the microwave or cover with foil and reheat in a 350°F oven until hot.
- Freeze: Let cool completely, then wrap tightly and freeze for up to 2 months. Thaw in the fridge overnight before reheating.
Pro tip: Make a double batch—one for now, one to freeze for a busy night.
FAQs
Can I prep this casserole in advance?
Yes! You can assemble everything ahead and refrigerate it (unbaked) for up to 24 hours. When ready to cook, let it come to room temp and bake as directed.
Will the zucchini make the casserole watery?
Zucchini releases some moisture while baking, but draining the tomatoes and baking uncovered at the end helps. You can also lightly salt and pat dry the zucchini slices before layering.
Can I use fresh tomatoes instead of canned?
Definitely! Use about 1½ cups of chopped, deseeded fresh tomatoes. Just note that fresh tomatoes may add a bit more moisture.
Is this recipe gluten-free?
Yes, it’s naturally gluten-free. Just check your cheese and canned tomatoes to ensure there are no hidden additives or gluten-containing thickeners.
Can I add pasta or rice?
Sure! Mix in cooked rice or pasta before baking if you want a more filling dish. You may want to increase the sauce or cheese slightly to keep it moist.
Final Thoughts
If you’re searching for a healthy, family-friendly casserole that’s easy to prepare and full of flavor, this Ground Turkey Zucchini Casserole is it. It’s simple, nourishing, and endlessly adaptable to your taste or dietary needs. With layers of seasoned turkey, juicy tomatoes, tender zucchini, and melted mozzarella, it’s the kind of dish that feels like comfort food—but fits right into a balanced lifestyle.
Print
Ground Turkey Zucchini Casserole
- Total Time: 50 minutes
- Yield: 4 servings
- Diet: Gluten Free
Description
A healthy, comforting one-dish dinner made with ground turkey, zucchini, Italian herbs, and cheese—simple, flavorful, and perfect for meal prep.
Ingredients
- 1 lb ground turkey
- 2 medium zucchinis, sliced
- 1 cup shredded mozzarella cheese
- ½ cup chopped onion
- 2 cloves garlic, minced
- 1 can (14 oz) diced tomatoes, drained
- 1 tsp dried Italian herbs
- ½ tsp salt
- ¼ tsp black pepper
- 1 tbsp olive oil
Instructions
- Preheat oven to 375°F (190°C).
- Sauté onion and garlic in olive oil, then add ground turkey and cook until browned.
- Stir in tomatoes, Italian herbs, salt, and pepper. Simmer 3–5 minutes.
- Layer half the zucchini slices in a greased baking dish, then half the turkey mixture. Repeat layers.
- Top with mozzarella and bake covered for 20 minutes, then uncovered for 10–15 minutes until golden.
Notes
- Pat zucchini dry to reduce moisture.
- Add spinach or mushrooms for extra veggies.
- Swap turkey with ground chicken or beef if desired.
- Prep Time: 15 minutes
- Cook Time: 35 minutes