Name: Easy Sweet Potato Egg Casserole Recipe
Prep time: 15 min
Cook time: 55 min
Total time: 1 h 10 min
Cuisine: American
Ingredients: 1/2 large yellow onion, chopped into 1/2-inch pieces; 1 green bell pepper, chopped into 1/2-inch pieces; 5 cups cubed sweet potatoes (1/2-inch cubes preferred); 3 garlic cloves, freshly minced; 10 large eggs; 1/2 cup grated mozzarella cheese; 1/2 cup whole milk; 1 lb turkey sausage (uncooked); 2 tbsp avocado oil; 1 tsp dried thyme; 1 tsp salt; 1/2 tsp pepper

Jump to Recipe

Introduction

This Easy Sweet Potato Egg Casserole is a hearty and flavorful breakfast option packed with vegetables, turkey sausage, and cheese. It’s perfect for preparing ahead and enjoying a nutritious start to your day. The combination of sweet potatoes and savory sausage creates a comforting dish everyone will love.

A close-up of a square piece of baked dish on a white plate with speckled details, resting on a white marbled surface. The dish has three visible layers: the top is golden brown with light browning and a slightly crispy texture; the middle is a creamy pale yellow layer with pieces of green and orange vegetables and brown ground meat scattered through it; the bottom layer appears thicker and more solid, with a mix of the same ingredients. A silver fork is placed in front of the square piece on the plate. In the blurred background, there is another piece of the dish. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

1/2 large yellow onion, chopped into 1/2-inch pieces
1/2 cup grated mozzarella cheese
5 cups cubed sweet potatoes (1/2-inch cubes preferred)
10 large eggs
1 tsp dried thyme
2 tbsp avocado oil
1 green bell pepper, chopped into 1/2-inch pieces
1 tsp salt
1/2 tsp pepper
3 garlic cloves, freshly minced
1 lb turkey sausage, uncooked
1/2 cup whole milk

Instructions

Step 1: Preheat your oven to 350°F (175°C). Prepare your vegetables by chopping the onion, green pepper, and sweet potatoes into 1/2-inch pieces. Grease a 9×13-inch casserole dish to prevent sticking.
Step 2: Heat the avocado oil in a Dutch oven or large saucepan over medium heat. Add the chopped onion, green pepper, and sweet potatoes. Cook for 8–9 minutes, stirring occasionally, until the vegetables begin to soften. Add the minced garlic in the last minute and sauté briefly. Remove the vegetables and spread them evenly in the prepared casserole dish.
Step 3: In the same pan, cook the turkey sausage over medium heat until fully cooked, breaking it into small pieces as it cooks. Once done, add the sausage to the casserole dish with the vegetables and stir to combine.
Step 4: In a mixing bowl, whisk together the eggs, milk, dried thyme, salt, pepper, and grated mozzarella cheese until smooth and well mixed.
Step 5: Pour the egg mixture over the sausage and vegetables in the casserole dish. Stir gently to distribute evenly. Bake in the preheated oven for 40–45 minutes, or until the center is set and firm. If the top browns too quickly, cover loosely with foil halfway through baking.
Step 6: Remove the casserole from the oven and let it cool for about 15 minutes before serving. This helps the flavors settle and makes it easier to cut portions.

Tips & Variations

Substitute turkey sausage with breakfast pork sausage or a plant-based alternative for a different flavor profile.
Add chopped spinach or kale with the vegetables for extra greens.
Use cheddar or pepper jack cheese instead of mozzarella for a sharper taste.
Make the casserole a day ahead and refrigerate before baking to save time in the morning.

Storage

Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. Reheat individual servings in the microwave for 1–2 minutes or until warmed through. You can also freeze portions for up to 2 months; thaw overnight in the refrigerator before reheating.

How to Serve

A rectangular metal baking tray filled with a golden brown casserole showing a slightly crispy top layer with patches of melted cheese and browned crumbled sausage. The casserole has visible chunks of orange sweet potato scattered throughout, mixed with soft, creamy egg layers containing small bits of green herbs and vegetables. The surface looks textured and slightly bubbly with a home-cooked, hearty appearance. The tray rests on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I make this casserole vegetarian?

Yes, simply omit the turkey sausage and consider adding extra vegetables or a plant-based sausage substitute to keep it hearty.

What can I use if I don’t have avocado oil?

You can substitute avocado oil with olive oil, vegetable oil, or any mild-flavored cooking oil you have on hand.