Easy Sweet Potato Egg Casserole

The smell of sweet potatoes caramelizing in a skillet might just be one of the coziest scents to wake up to on a slow Sunday morning. I first threw this casserole together on a whim when I had a bag of sweet potatoes that needed using and a house full of hungry weekend guests. The way the natural sweetness of the potatoes plays against the savory eggs and salty feta creates this perfect balance that keeps everyone coming back for seconds.

My sister took one bite and immediately asked for the recipe, which is basically the highest compliment anyone can receive in our family. Now its my go-to whenever I need to feed a crowd without spending hours in the kitchen.

Ingredients

• 3 medium sweet potatoes, peeled and diced: These form the hearty foundation of the casserole, so aim for even 1-inch cubes that will cook through evenly without turning mushy
• 1 small yellow onion, finely chopped: The onion becomes sweet and tender as it sautes, adding depth that balances the earthy sweetness of the potatoes
• 1 red bell pepper, diced: This brings a pop of color and a subtle sweetness that complements rather than overpowers the other vegetables
• 2 cups baby spinach, roughly chopped: Fresh spinach wilts down beautifully and adds a nice contrast to the heartier ingredients
• 8 large eggs: Room temperature eggs will incorporate more evenly into the milk, creating a silkier custard
• 1 cup milk: Whole milk creates the richest texture, but any milk you keep on hand will work perfectly fine
• 1 cup shredded cheddar cheese: Sharp cheddar cuts through the sweetness of the potatoes with its tangy bite
• 1/2 cup crumbled feta cheese: This is optional but highly recommended for those salty pops of flavor throughout
• 2 tablespoons olive oil: A fruity olive oil adds another layer of flavor to the roasted vegetables
• 1 teaspoon salt: Sweet potatoes need enough salt to really shine, so do not be shy with seasoning
• 1/2 teaspoon black pepper: Freshly cracked pepper adds a subtle warmth that lingers
• 1/2 teaspoon smoked paprika: This is the secret ingredient that gives the dish its subtle smoky depth
• 1/4 teaspoon garlic powder: Garlic powder disperses more evenly than fresh garlic would in the egg mixture

Instructions

Prepare your oven and pan:

Preheat your oven to 375°F and give a 9x13-inch baking dish a light coating of oil or cooking spray

Cook the sweet potatoes and onion:

Heat olive oil in a large skillet over medium heat, add the diced sweet potatoes and chopped onion, and let them sizzle for about 7 to 8 minutes until the potatoes are just tender when pierced with a fork

Add the remaining vegetables:

Stir in the diced bell pepper and cook for another 3 minutes, then toss in the spinach and cook just until it wilts, about 1 minute

Transfer vegetables to the baking dish:

Spread the cooked vegetables evenly across your prepared baking dish, creating a nice flat layer for the egg mixture

Whisk the egg mixture:

In a large bowl, whisk together the eggs, milk, salt, pepper, smoked paprika, and garlic powder until everything is completely combined and slightly frothy

Assemble the casserole:

Pour the egg mixture evenly over the vegetables, then sprinkle the cheddar cheese and feta across the top

Bake until set:

Bake for 30 to 35 minutes until the center is just set and the top is lightly golden, checking at the 25 minute mark

Let it rest before serving:

Cool for 5 minutes before slicing, which helps the casserole hold its shape beautifully when served

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This recipe became a Thanksgiving morning tradition after the year I served it and my aunt declared it better than the actual dinner. Sometimes simple food made with care creates the most lasting memories.

Make It Your Own

Kale works wonderfully in place of spinach if that is what you have in your fridge, and Swiss cheese can replace the cheddar for a milder flavor profile. I have even added diced ham or crumbled bacon when serving meat eaters.

Serving Suggestions

A crisp green salad with a bright vinaigrette cuts through the richness of the casserole beautifully. Crusty bread for soaking up any runny eggs never hurts either.

Storage and Reheating

The casserole keeps well in the refrigerator for up to four days and actually tastes even better the next morning as the flavors have more time to meld together.

• Reheat individual portions in the microwave for about 2 minutes
• Warm larger portions in a 350°F oven until heated through
• Freeze unbaked portions for up to two months if you want to meal prep

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There is something deeply satisfying about a dish that nourishes people so completely while requiring so little fuss to put together.

Common Questions

→ Can I make this sweet potato casserole ahead of time?

Yes, you can assemble the entire dish the night before and refrigerate it unbaked. In the morning, let it sit at room temperature for 20 minutes while the oven preheats, then bake as directed. You may need to add 5-10 minutes to the baking time if it's cold from the refrigerator.

→ What vegetables work best in this breakfast bake?

Besides sweet potatoes, you can use diced regular potatoes, butternut squash, or hash browns. Other great additions include mushrooms, zucchini, kale instead of spinach, or even diced tomatoes. Just keep the total vegetable amount around 4 cups for the best texture.

→ How do I know when the casserole is done baking?

The casserole is ready when the center is set and doesn't jiggle when you gently shake the pan. The top should be lightly golden, and a knife inserted in the center should come out clean. The edges may start to pull away from the sides slightly as well.

→ Can I freeze this breakfast casserole?

Yes, this freezes well. Let it cool completely, then wrap tightly in plastic and foil. Freeze for up to 3 months. Thaw overnight in the refrigerator and reheat at 350°F for 15-20 minutes until warmed through. Individual portions also reheat beautifully in the microwave.

→ What can I serve with this egg and potato bake?

Fresh fruit salad or sliced melon balances the richness perfectly. Toast, English muffins, or crusty bread are great for soaking up any juices. For a lighter touch, serve with a simple green salad dressed with vinaigrette. Hot coffee or fresh orange juice complete the meal.

→ How can I make this dairy-free?

Use unsweetened almond, oat, or soy milk instead of dairy milk. Replace the cheddar and feta with your favorite vegan cheese shreds, or simply omit the cheese entirely and add extra vegetables like mushrooms or bell peppers for flavor and substance.