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Flexible Egg Casserole

This egg casserole combines eggs, cheese, vegetables, and optional meats baked together into a fluffy, golden dish. It’s versatile and forgiving, perfect for preparing ahead and customizing with leftovers or fresh ingredients, resulting in a hearty, satisfying final texture with a slightly crispy top.
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Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings: 4
Course: Main Course
Cuisine: American
Calories: 320
Ingredients Equipment Method Notes

Ingredients
  

  • 8 large eggs preferably organic
  • 1 cup milk whole or half-and-half
  • 1.5 cups shredded cheese cheddar, Monterey Jack, Swiss, or mix
  • 1 cup vegetables bell peppers, spinach, or frozen mix
  • 2 slices cooked bacon or sausage optional, crumbled
  • 1 tablespoon fresh herbs parsley, chives, or thyme, chopped
  • to taste salt and pepper

Equipment

  • Oven
  • 9x13 inch baking dish

Method
 

  1. Preheat your oven to 180°C (350°F). Lightly grease your 9x13-inch baking dish to prevent sticking.
  2. In a large mixing bowl, crack in all the eggs. Whisk them vigorously until the mixture is smooth, slightly frothy, and uniform in color.
  3. Add the milk to the eggs and whisk again until well combined. This creates a creamy base that will give the casserole its fluffy texture.
  4. Chop your vegetables into small, bite-sized pieces—bell peppers, spinach, or even frozen mixed veggies—then spread them evenly across the bottom of the prepared baking dish. If using frozen, make sure to thaw and drain excess water first.
  5. Sprinkle the shredded cheese evenly over the vegetables, covering the surface. Feel free to mix different cheeses for a richer flavor.
  6. If you're using cooked bacon or sausage, crumble or chop it into small pieces and scatter evenly over the cheese layer. This adds a savory punch to every bite.
  7. Pour the egg mixture slowly and evenly over the layered ingredients, making sure everything is submerged but not swimming. This helps everything bake uniformly.
  8. Sprinkle the chopped herbs, salt, and pepper over the top for fresh flavor. Gently press down with a spatula if needed to ensure even contact with the eggs.
  9. Place the dish in the preheated oven and bake for 30-35 minutes. You'll see the edges turn golden and the top puff up slightly, with bubbles forming around the edges.
  10. Check for doneness by inserting a toothpick or knife into the center; it should come out clean, and the casserole should be set with a slightly golden top. If needed, bake for an additional 5 minutes.
  11. Remove the casserole from the oven and let it rest for 10 minutes. This helps it set, making it easier to slice and serve clean, neat squares.
  12. Slice into squares, serve warm, and enjoy a comforting, hearty breakfast that’s perfect for busy mornings or relaxed weekends.

Notes

Feel free to customize with your favorite vegetables, cheeses, or meats. To prepare ahead, whisk the eggs and chop ingredients the night before, then assemble and bake in the morning. Resting the casserole before slicing ensures clean cuts and a perfect presentation.