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Breakfast Casserole

AT

By

Ago Tanfossi

Chef and recipe curator at Global Cucina

Published on March 10, 2026

Updated on March 10, 2026

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This easy breakfast casserole recipe is perfect for feeding a crowd! It's hearty and flavorful, filled with roasted potatoes, veggies, eggs, and cheddar cheese. Find make-ahead instructions in the blog post above.

12 servings
Capolavoro Score 4.8/5 · 8 votes
Breakfast Casserole

Ingredients

Ingredients

  • 3 yukon gold potatoes
  • Freshly Ground Black Pepper
  • 12 Large Egg
  • 1 cup Milk
  • 1/2 yellow onion
  • 2 Garlic Cloves
  • 1 Red Bell Pepper
  • 1 green bell pepper
  • 1 cup Spinach
  • 4 Green Onion
  • shredded cheddar

for initial mix

  • 1 tbsp Olive Oil
  • 1/2 tsp Salt

for finishing

  • Salt
  • 2 tbsp Olive Oil

Instructions

  1. 1

    Roast the potatoes: Preheat the oven to 425°F and line a baking sheet with parchment paper. Place the potatoes on the baking sheet. Drizzle with the olive oil and sprinkle with the salt and several grinds of pepper. Toss to coat. Spread evenly on the baking sheet and roast for to 25 minutes, or until tender and browned.

  2. 2

    Make the casserole: Reduce the oven temperature to 350°F and oil a 9x13-inch baking dish.

  3. 3

    In a large bowl, whisk together the eggs, milk, and ¼ teaspoon of the salt. Set aside.

  4. 4

    Heat the olive oil in a large skillet over medium heat. Add the onion, the remaining 1 teaspoon salt, and several grinds of pepper. Cook, stirring occasionally, for to 8 minutes, or until soft. Add the garlic, red pepper, and green pepper and cook, stirring occasionally, for 2 minutes. Add the spinach and half the green onions and toss until the spinach is just wilted.

  5. 5

    Spread the potatoes in an even layer in the prepared baking dish. Top with 1 cup of the cheese, followed by the sautéed veggies. Pour in the egg mixture and sprinkle with the remaining ½ cup cheese and the reserved green onions.

  6. 6

    Bake for to 45 minutes, or until the eggs are set.

  7. 7

    Let stand for 5 minutes before slicing and serving.

Ago's Notes

  • Adjust salt to taste based on your canned goods.

Let the layers of flavor and texture speak for themselves, and savor each bite as a celebration of simple, honest cooking-your kitchen, your table, and the joy of shared moments.

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Breakfast

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