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Protein-Packed Sweet Potato Egg Casserole Recipe
Ash Tyrrell

Protein-Packed Sweet Potato Egg Casserole Recipe

The first time I made this protein‑packed sweet potato egg casserole, I was simply trying to use ingredients sitting in my fridge. I roasted a couple of sweet potatoes, whisked some eggs, and tossed in a few vegetables. When it came out of the oven, the aroma alone made me excited to taste it.
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Total Time 50 minutes
Servings: 8
Ingredients Method Notes

Ingredients
  

  • 10 large eggs – Eggs form the base of the casserole and provide protein and structure for a fluffy texture.
  • 2 medium sweet potatoes peeled and diced – Roast them first to bring out natural sweetness and prevent them from becoming mushy.
  • 2 cups fresh spinach – Adds color nutrients, and a soft texture. Fresh spinach works better than frozen because it releases less water.
  • 1 red bell pepper diced – Provides a mild sweetness and a nice crunch in each bite.
  • 1 small yellow onion finely chopped – Adds aromatic depth and savory flavor to the casserole.
  • 1 cup whole milk – Makes the egg mixture creamy and custard‑like when baked.
  • 1 tablespoon olive oil – Used to sauté vegetables and enhance their flavor.
  • 1 teaspoon salt – Essential for bringing out the flavors of all ingredients.
  • ½ teaspoon black pepper – Adds a mild warmth and balance to the dish.
  • ½ teaspoon garlic powder – Provides subtle savory notes that complement the eggs and vegetables.
  • 1 cup shredded cheddar cheese – Melts beautifully and adds rich cheesy goodness.

Method
 

  1. Start by preheating your oven to 375°F (190°C). Lightly grease a baking dish to prevent sticking and ensure easy serving. This step prepares the oven for even cooking and helps the casserole bake properly.
  2. In a large mixing bowl, whisk together eggs, milk, salt, pepper, and garlic powder. Whisk until everything is well combined and slightly airy. This mixture will become the fluffy base of your casserole.
  3. Heat olive oil in a skillet over medium heat. Add chopped onion and bell pepper and cook for about five minutes until soft. Then add spinach and cook briefly until wilted. This step enhances flavor and removes excess moisture.
  4. Spread roasted sweet potatoes evenly in the baking dish as the base layer. Add the sautéed vegetables over the sweet potatoes and pour the egg mixture evenly over everything.
  5. Sprinkle shredded cheddar cheese across the top of the casserole. The cheese melts during baking and creates a delicious golden crust.
  6. Bake the Casserole
  7. Place the dish in the oven and bake for 30–35 minutes. The casserole is ready when the center is fully set and the top is lightly golden.
  8. Remove the casserole from the oven and let it rest for about 10 minutes. This helps it firm up so you can cut clean slices before serving.

Notes

  • I always roast the sweet potatoes first because it enhances their natural sweetness.
  • I prefer using whole milk since it gives the eggs a creamy texture.
  • I taste the sautéed vegetables before adding them to adjust seasoning.
  • I let the casserole rest before slicing so the pieces come out perfectly.
  • Sometimes I sprinkle fresh herbs on top for extra freshness.