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Everything Bagel Breakfast Casserole

Everything Bagel Breakfast Casserole

By Chef Christopher at @may.eighty.five
Published on February 11, 2025
This Everything Bagel Breakfast Casserole is a savoury and satisfying dish, perfect for brunch or meal prep. Made with toasted bagel chunks, caramelized onions, sharp cheddar, cream cheese, and a rich egg mixture, it’s seasoned with everything bagel seasoning for a burst of flavour. Baked to perfection, this dish is topped with fresh chives and optional microgreens for added freshness.
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Time and servings

55 minsTotal time
10Servings
15 minsPrep time
40 minsCooking time

Ingredients

  • 1 red onion, thinly sliced
  • 4 everything bagels, cut into chunks
  • 4 green onions, chopped
  • 2 cups sharp cheddar cheese, shredded
  • salt, to taste
  • black pepper, to taste
  • 8 eggs
  • 2 cups milk (or dairy-free alternative)
  • 2 tbsp grainy Dijon mustard
  • 1 tbsp everything bagel seasoning
  • 4 oz cream cheese, cut into chunks
  • 2-3 tbsp chives, chopped
  • Microgreens (optional, for garnish)

Directions

  1. Step 1

    Preheat oven to 350°F (175°C).

  2. Step 2

    In a skillet over medium heat, cook the sliced red onion with a drizzle of olive oil until soft and caramelized. Set aside.

  3. Step 3

    Place the bagel chunks in a greased baking dish. Add the caramelized onions, green onions, and half of the shredded cheddar cheese. Season with salt and pepper, then toss to combine.

  4. Step 4

    In a separate bowl, whisk together the eggs, milk, grainy Dijon mustard, and everything bagel seasoning.

  5. Step 5

    Pour the egg mixture evenly over the bagel mixture. Top with the remaining cheddar cheese and distribute the cream cheese chunks throughout.

  6. Step 6

    Bake for 40 minutes, or until the casserole is set and golden on top.

  7. Step 7

    Sprinkle with chopped chives and microgreens (if using). Serve warm and enjoy!