Easy Sweet Potato Egg Casserole Recipe
Introduction
This Easy Sweet Potato Egg Casserole is a comforting and nutritious breakfast option that combines tender sweet potatoes, savory turkey sausage, and a flavorful egg mixture. It’s perfect for meal prep or feeding a crowd on a weekend morning.

Ingredients
- 2 tablespoons avocado oil
- 1/2 large yellow onion, chopped
- 1 green bell pepper, chopped
- 5 cups cubed sweet potatoes
- 3 garlic cloves, minced
- 1 pound turkey sausage
- 10 eggs
- 1/2 cup milk (plant-based milk can be substituted)
- 1 teaspoon dried thyme
- 1 teaspoon salt
- 1/2 teaspoon pepper
- 1/2 cup grated mozzarella cheese
Instructions
- Step 1: Preheat your oven to 350°F (175°C). Grease a 9×13-inch casserole dish. While the oven heats, chop the onion, green bell pepper, and sweet potatoes.
- Step 2: Heat avocado oil in a Dutch oven or large saucepan over medium heat. Add the chopped onion, bell pepper, and sweet potatoes. Cook for 8-9 minutes, stirring occasionally, until the vegetables start to soften. Add the minced garlic in the last 1-2 minutes and sauté briefly. Remove vegetables from the pan and spread evenly in the prepared casserole dish.
- Step 3: In the same pan, cook the turkey sausage until fully cooked, breaking it into small pieces as it cooks. Once done, add the sausage to the vegetables in the casserole dish and stir to combine.
- Step 4: In a mixing bowl, whisk together eggs, milk, dried thyme, salt, pepper, and grated mozzarella until smooth and well combined.
- Step 5: Pour the egg mixture over the sausage and vegetable mixture in the casserole dish. Stir gently to distribute the egg mixture evenly. Bake in the preheated oven for 40-45 minutes, until the center is firm. If the top browns too quickly, cover loosely with foil halfway through baking.
- Step 6: Remove from the oven and let the casserole cool for about 15 minutes before slicing and serving. This resting time helps the casserole set and makes serving easier.
Tips & Variations
- For a vegetarian version, substitute turkey sausage with plant-based sausage or cooked mushrooms.
- Use sweet or smoked paprika to add a subtle smoky flavor to the egg mixture.
- Swap mozzarella for cheddar or pepper jack cheese for a different cheese profile.
- Add chopped spinach or kale to the vegetables for extra greens and nutrients.
- Make ahead by preparing the casserole the night before; store covered in the fridge and bake in the morning.
Storage
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat portions in the microwave or oven until warmed through. This casserole also freezes well; wrap tightly and freeze up to 2 months. Thaw overnight in the refrigerator before reheating.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use a different type of sausage?
Yes, you can use breakfast sausage, pork sausage, or a plant-based alternative depending on your preference. Adjust cooking times if using raw or pre-cooked sausage.
Is this casserole suitable for meal prep?
Absolutely. This casserole is great for preparing ahead. You can assemble it the night before and bake it fresh in the morning, or bake it fully and reheat individual portions throughout the week.
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Easy Sweet Potato Egg Casserole Recipe
- Total Time: 1 hour 10 minutes
- Yield: 8 servings 1x
Description
This Easy Sweet Potato Egg Casserole is a hearty and flavorful breakfast dish combining tender sautéed sweet potatoes, green peppers, and onions with savory turkey sausage, all bound together with a creamy mixture of eggs, milk, thyme, and mozzarella cheese. Baked to perfection, it offers a wholesome start to your day with a delightful blend of textures and tastes.
Ingredients
Vegetables
- 2 tablespoons avocado oil
- 1/2 large yellow onion, chopped
- 1 green bell pepper, chopped
- 5 cups cubed sweet potatoes
- 3 garlic cloves, minced
Meat
- 1 pound turkey sausage
Egg Mixture
- 10 eggs
- 1/2 cup milk (plant-based milk can be substituted)
- 1 teaspoon dried thyme
- 1 teaspoon salt
- 1/2 teaspoon pepper
- 1/2 cup grated mozzarella cheese
Instructions
- Preheat Oven and Prepare the Baking Dish: Preheat your oven to 350°F (175°C). While the oven heats, chop all your vegetables. Grease a 9×13-inch casserole dish to prevent sticking during baking.
- Cook the Vegetables: Heat avocado oil in a Dutch oven or large saucepan until hot. Add chopped onion, green bell pepper, and sweet potatoes. Sauté for 8-9 minutes, stirring occasionally until the vegetables start to soften. In the last 1-2 minutes, add the minced garlic and cook briefly. Remove the vegetables and spread evenly in the prepared casserole dish.
- Cook the Sausage: In the same pan, add the turkey sausage and cook thoroughly, breaking it into small pieces as it cooks. Once fully cooked, add the sausage to the vegetables in the casserole dish and mix well.
- Prepare the Egg Mixture: In a separate bowl, whisk together the eggs, milk, dried thyme, salt, pepper, and grated mozzarella until smooth and well combined, forming the egg mixture.
- Combine and Bake: Pour the egg mixture evenly over the vegetable and sausage combination in the casserole dish. Gently stir to evenly distribute the egg mixture. Place the casserole in the preheated oven and bake for 40-45 minutes, or until the center is firm. If the top browns too quickly, cover loosely with foil halfway through baking to prevent burning.
- Cool and Serve: Remove the casserole from the oven once baked and let it cool for about 15 minutes to allow the flavors to meld and make it easier to cut. Serve warm and enjoy this delicious and hearty breakfast casserole.
Notes
- Plant-based milk can be used as a substitute for dairy milk in the egg mixture to make it dairy-free.
- Swapping turkey sausage for a vegetarian alternative can turn this into a vegetarian-friendly dish.
- Cover the casserole with foil midway through baking if the top begins to brown too quickly.
- Allowing the casserole to rest after baking improves slicing and the melding of flavors.
- This casserole can be prepared the night before and baked fresh in the morning for convenience.
- Prep Time: 15 minutes
- Cook Time: 55 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
Keywords: Sweet Potato Casserole, Breakfast Casserole, Turkey Sausage Breakfast, Egg Casserole, Healthy Breakfast, Make Ahead Breakfast

