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Looking for a hearty, wholesome breakfast that you can prep ahead, customize, and feed the whole family with? Say hello to the Sweet Potato Egg Casserole—a nourishing, flavor-packed dish that’s ideal for meal prep, weekend brunches, or busy weekday mornings. Loaded with protein-rich turkey sausage, naturally sweet roasted sweet potatoes, and a fluffy, cheesy egg mixture, it’s everything you want in a morning meal: satisfying, simple, and seriously delicious.

Why You’ll Love This Recipe

There are dozens of breakfast casseroles out there, but this sweet potato egg casserole stands out—and here’s why:

Whole Food Ingredients: Made with real, clean ingredients that taste great and make you feel even better.
Meal Prep Friendly: Bake once, and you’ve got breakfast ready for the whole week.
Hearty & Balanced: Combines protein, healthy fats, and slow-digesting carbs to keep you full and energized.
Gluten-Free & High in Protein: Naturally gluten-free and packed with over 15 grams of protein per serving.
Easy to Customize: Swap veggies, add cheese, change the meat—it’s versatile and forgiving.
Family-Approved: Even picky eaters enjoy the mild, savory flavors.

This casserole checks all the boxes—and then some. You’re going to love how simple and satisfying it is.

Ingredients You’ll Need

Tip: You’ll find the full list of ingredients and measurements in the recipe card below.

Here’s everything you’ll need to bring this cozy breakfast casserole to life:

For the Base:

3 garlic cloves, minced – For a rich, aromatic base.
1 lb uncooked turkey sausage – Adds protein and savory flavor without excess fat.
5 cups cubed sweet potatoes (1-inch cubes) – Naturally sweet and packed with fiber and nutrients.
1 green bell pepper, diced – Adds crunch and freshness.
1/2 large yellow onion, finely diced – For depth of flavor.
2 tbsp avocado oil (or olive oil) – For roasting and sautéing the veggies.

For the Egg Mixture:

10 large eggs – The foundation of the casserole—rich in protein and healthy fats.
1/2 cup milk (whole milk for richness) – Helps keep the eggs soft and fluffy.
1/2 cup grated mozzarella cheese (Sargento brand recommended) – Melts beautifully for a creamy finish.
1 tsp salt – Enhances all the natural flavors.
1 tsp dried thyme – Earthy and aromatic, pairs well with the veggies and sausage.
1/2 tsp black pepper – Adds just a touch of heat.

With these ingredients, you’re on your way to a breakfast that’s hearty, flavorful, and super satisfying.

Let’s Get Started

Here’s how to make your Sweet Potato Egg Casserole from start to finish:

Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with cooking spray or a light coating of oil.
Roast the sweet potatoes:
Toss the sweet potato cubes with 1 tablespoon of avocado oil and a pinch of salt. Spread them evenly on a baking sheet and roast for 20–25 minutes, or until tender and slightly golden. Set aside once done.
Cook the sausage and veggies:
In a large skillet, heat the remaining tablespoon of oil over medium heat. Add the minced garlic and onion. Sauté for 2–3 minutes until fragrant. Add turkey sausage and cook until browned and crumbled, about 6–8 minutes. Stir in diced green bell pepper and cook for another 2–3 minutes until just softened.
Make the egg mixture:
In a large bowl, whisk together the eggs, milk, salt, pepper, thyme, and mozzarella cheese.
Assemble the casserole:
In the prepared baking dish, layer the roasted sweet potatoes and sausage mixture evenly. Pour the egg mixture over the top, making sure it’s evenly distributed.
Bake:
Place the dish in the oven and bake for 35–40 minutes, or until the center is set and a knife inserted comes out clean.
Cool and serve:
Let the casserole rest for 5–10 minutes before slicing. Serve warm, or let it cool and refrigerate for later.

Servings and Pairing

This casserole yields 8 hearty servings, making it perfect for a full week of breakfasts or a larger brunch gathering.

Perfect pairings include:

Fresh fruit or a fruit salad
Sliced avocado or guacamole on the side
Toasted whole grain bread or a slice of sourdough
Hot sauce or salsa for a flavor kick
A cup of hot coffee or a green smoothie for balance

It’s the kind of breakfast that fuels your morning and keeps you full till lunch—no mid-morning slump here.

Variations

Want to make it your own? Try one of these tasty variations:

Vegetarian version: Skip the turkey sausage and add mushrooms, spinach, or black beans.
Cheese swap: Use cheddar, goat cheese, or feta instead of mozzarella.
Add greens: Toss in a couple of handfuls of fresh spinach or kale into the egg mixture.
Spicy kick: Add red pepper flakes, jalapeños, or hot sauce to the mix.
Swap the meat: Use chicken sausage, ground beef, or even chorizo for a different flavor profile.

This casserole is super flexible—customize it based on what you have on hand or your dietary needs.

Storage Tips

This casserole is perfect for meal prep and stores beautifully.

Refrigerator: Store leftovers in an airtight container for up to 4–5 days.
Freezer: Cut into portions and freeze individually in freezer-safe containers for up to 3 months. Thaw overnight and reheat in the microwave or oven.
Reheating: Warm in the microwave for 1–2 minutes or in the oven at 350°F for 10–15 minutes until heated through.

Ideal for grab-and-go breakfasts, busy mornings, or lazy weekend brunches.

FAQs

Can I use sweet potato hash browns instead of cubes?
Yes! You can use store-bought or homemade sweet potato hash—just reduce the roasting time and sauté them lightly before layering.

Can I make this dairy-free?
Absolutely. Use unsweetened almond milk or oat milk and skip the cheese or use a dairy-free version.

Can I prep it the night before and bake in the morning?
Yes! Assemble everything, cover, and refrigerate overnight. Bake fresh in the morning as directed.

What’s the best way to tell when the casserole is done?
The center should be firm and no longer jiggly. Insert a knife in the middle—if it comes out clean, it’s ready.

Is it okay to use ground beef instead of turkey sausage?
Definitely. Just be sure to drain any excess fat before layering it in the casserole.

Final Thoughts

Sweet Potato Egg Casserole is one of those reliable recipes that fits any occasion—from weekday breakfasts to Sunday brunch. It’s nutritious, filling, and full of flavor, all while being incredibly easy to make and adaptable to whatever ingredients you’ve got on hand.

Whether you’re fueling a busy morning, feeding a crowd, or stocking the freezer with ready-made meals, this casserole brings warmth, comfort, and nourishment to your table. Go ahead—slice it up, serve it warm, and start your day the satisfying way.

Sweet Potato Egg Casserole