If you’re looking for a comforting and delicious dish that brings the flavors of traditional stuffed peppers into a cozy casserole form, you’ve come to the right place. This Easy Stuffed Pepper Casserole with Ground Turkey is a fantastic way to enjoy all the classic ingredients without the fuss of stuffing individual peppers. It’s a one-pot wonder that’s perfect for busy weeknights and is sure to please the whole family. Let’s dive into the delicious details of this recipe!
Why It Deserves a Spot

This casserole is not only simple to prepare but also packed with flavor and nutrition. Using lean ground turkey makes it a healthier option while still delivering a satisfying meal. The combination of fresh vegetables, hearty protein, and gooey melted cheese creates a delightful blend of textures and tastes. Plus, it’s an excellent way to sneak in some extra veggies—who doesn’t love a colorful dish? This Easy Stuffed Pepper Casserole with Ground Turkey deserves a spot on your dinner table for its convenience and deliciousness!
Ingredient Checklist
Before you start cooking, gather these ingredients:
- 2 pounds lean ground turkey
- 1 yellow onion, finely diced
- 3-4 bell peppers, any color
- 3 cloves fresh garlic, minced
- 15 ounces fire-roasted diced tomatoes with juices (1 can)
- 24 ounces marinara sauce (1 jar)
- 1 tablespoon Italian seasoning
- 2 teaspoons garlic powder
- 1 teaspoon kosher salt
- 1 teaspoon ground black pepper
- 3 cups fresh baby spinach
- 1 cup quick cooking rice
- 1 cup shredded mozzarella cheese
- Chopped fresh parsley for garnish
Equipment at a Glance
To make this easy casserole, you’ll need:
- A large skillet or Dutch oven for cooking
- A wooden spoon or spatula for stirring
- A baking dish or casserole dish for baking
- A sharp knife and cutting board for chopping
- Measuring cups and spoons for accuracy
Easy Stuffed Pepper Casserole with Ground Turkey in Steps

Step 1: Prepare the Ingredients
Start by finely dicing the onion and chopping the bell peppers. Mince the garlic cloves and set everything aside. Preheat your oven to 375°F (190°C) while you prepare the casserole.
Step 2: Brown the Ground Turkey
In a large skillet or Dutch oven over medium heat, add the lean ground turkey. Cook until browned, breaking it apart with a spatula, about 5-7 minutes.
Step 3: Sauté the Vegetables
Add the diced onion and bell peppers to the skillet. Sauté for about 5 minutes until the vegetables are tender. Stir in the minced garlic and cook for an additional minute until fragrant.
Step 4: Add the Sauces and Seasoning
Pour in the fire-roasted diced tomatoes (with juices) and marinara sauce. Sprinkle in the Italian seasoning, garlic powder, kosher salt, and ground black pepper. Stir to combine and let the mixture simmer for about 5 minutes.
Step 5: Incorporate the Spinach and Rice
Add the fresh baby spinach to the skillet, stirring until wilted. Next, stir in the quick cooking rice. Make sure everything is well mixed and heated through.
Step 6: Transfer to Baking Dish
Transfer the turkey and vegetable mixture into a greased casserole dish, spreading it evenly.
Step 7: Top with Cheese
Sprinkle the shredded mozzarella cheese generously over the top of the casserole.
Step 8: Bake
Place the casserole in the preheated oven and bake for 25-30 minutes, or until the cheese is melted, bubbly, and slightly golden.
Step 9: Garnish and Serve
Once out of the oven, let it cool for a few minutes. Garnish with chopped fresh parsley before serving. Enjoy your Easy Stuffed Pepper Casserole with Ground Turkey!
Smart Substitutions

If you’re looking to customize this Easy Stuffed Pepper Casserole with Ground Turkey, consider these substitutions:
- Use ground chicken or beef instead of turkey for a different flavor.
- Swap the marinara sauce for alfredo sauce for a creamy twist.
- Incorporate different vegetables like zucchini or corn for added nutrition.
- Use brown rice or quinoa for a healthier grain option.
Don’t Do This
To ensure your casserole turns out perfectly, avoid these common mistakes:
- Don’t skip the browning step for the turkey. This adds essential flavor.
- Avoid overcooking the vegetables; they should be tender but not mushy.
- Don’t forget to let the casserole sit for a few minutes after baking; it helps set up.
- Don’t substitute long-cooking rice for quick cooking rice without adjusting the liquid and cooking time accordingly.
Make Ahead Like a Pro
Want to prepare this Easy Stuffed Pepper Casserole with Ground Turkey in advance? Here are some tips:
You can make the filling a day ahead and store it in the refrigerator. Simply bake it when you’re ready to serve. Alternatively, assemble the entire casserole and cover it tightly. It can be kept in the refrigerator for up to 24 hours before baking. For longer storage, consider freezing the assembled casserole. Just make sure to wrap it well and it can be frozen for up to three months. Thaw overnight in the fridge before baking.
Easy Stuffed Pepper Casserole with Ground Turkey FAQs
Can I use brown rice instead of quick cooking rice?
Yes, you can use brown rice, but you will need to increase the cooking time and add more liquid. Follow the package instructions for cooking brown rice before mixing it into the casserole.
Can I make this casserole vegetarian?
Absolutely! Substitute the ground turkey with a plant-based meat alternative or cooked lentils, and use vegetable broth instead of marinara sauce if desired.
Can I freeze leftovers?
Yes! Leftover casserole can be frozen for up to three months. Just make sure to store it in an airtight container. Reheat in the oven or microwave until heated through.
What can I serve with this casserole?
This casserole is a meal on its own, but you can serve it alongside a simple green salad or some crusty bread for a complete dinner.
One Pan, More Ideas
If you love the simplicity of this Easy Stuffed Pepper Casserole with Ground Turkey, you might also enjoy:
Time to Try It
Now that you have all the steps and tips at your fingertips, it’s time to roll up your sleeves and make this Easy Stuffed Pepper Casserole with Ground Turkey. Whether you’re cooking for family or meal-prepping for the week, this recipe is sure to become a favorite. Enjoy every cheesy, flavorful bite! Happy cooking!

Easy Stuffed Pepper Casserole with Ground Turkey
Ingredients
- 2 pounds lean ground turkey
- 1 yellow onion, finely diced
- 3-4 bell peppers, any color
- 3 cloves fresh garlic, minced
- 15 ounces fire-roasted diced tomatoes with juices (1 can)
- 24 ounces marinara sauce (1 jar)
- 1 tablespoon Italian seasoning
- 2 teaspoons garlic powder
- 1 teaspoon kosher salt
- 1 teaspoon ground black pepper
- 3 cups fresh baby spinach
- 1 cup quick cooking rice
- 1 cup shredded mozzarella cheese
- Chopped fresh parsley for garnish
Instructions
- Start by finely dicing the onion and chopping the bell peppers. Mince the garlic cloves and set everything aside. Preheat your oven to 375°F (190°C) while you prepare the casserole.
- In a large skillet or Dutch oven over medium heat, add the lean ground turkey. Cook until browned, breaking it apart with a spatula, about 5-7 minutes.
- Add the diced onion and bell peppers to the skillet. Sauté for about 5 minutes until the vegetables are tender. Stir in the minced garlic and cook for an additional minute until fragrant.
- Pour in the fire-roasted diced tomatoes (with juices) and marinara sauce. Sprinkle in the Italian seasoning, garlic powder, kosher salt, and ground black pepper. Stir to combine and let the mixture simmer for about 5 minutes.
- Add the fresh baby spinach to the skillet, stirring until wilted. Next, stir in the quick cooking rice. Make sure everything is well mixed and heated through.
- Transfer the turkey and vegetable mixture into a greased casserole dish, spreading it evenly.
- Sprinkle the shredded mozzarella cheese generously over the top of the casserole.
- Place the casserole in the preheated oven and bake for 25-30 minutes, or until the cheese is melted, bubbly, and slightly golden.
- Once out of the oven, let it cool for a few minutes. Garnish with chopped fresh parsley before serving. Enjoy your Easy Stuffed Pepper Casserole with Ground Turkey!
Equipment
- Large skillet or Dutch oven
- Wooden spoon or spatula
- Baking Dish or Casserole Dish
- Sharp Knife
- Cutting Board
- Measuring cups and spoons
Notes
- You can make the filling a day ahead and store it in the refrigerator.
- Consider using ground chicken or beef for different flavors.
- Feel free to customize with different vegetables like zucchini or corn.
