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Easy Denver Omelet Bake: Make Ahead Breakfast Casserole

A thick, golden slice of Denver omelet bake showing chunks of ham, peppers, and eggs on a white plate.
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This recipe transforms the classic Denver omelet into a simple, make-ahead breakfast casserole perfect for feeding a crowd or meal prepping for the week. It features ham, peppers, and onions baked into a fluffy egg base.

Ingredients

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  • 12 large eggs
  • 1 cup milk (whole or 2%)
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1 cup diced fully cooked ham
  • 1 cup diced green bell pepper
  • 1/2 cup diced yellow onion
  • 1 cup shredded sharp cheddar cheese
  • 1 tablespoon butter, for greasing

Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. Grease a 9×13 inch baking dish with butter.
  2. In a large bowl, whisk together the eggs, milk, salt, and pepper until well combined and slightly frothy.
  3. Gently fold in the diced ham, green bell pepper, and diced onion into the egg mixture.
  4. Pour the entire mixture into the prepared baking dish.
  5. Sprinkle the shredded cheddar cheese evenly over the top of the egg mixture.
  6. Bake for 30 to 35 minutes, or until the center is set and a knife inserted near the middle comes out clean. The bake should be lightly golden brown.
  7. Let the Denver Omelet Bake rest for 5 minutes before slicing and serving.

Notes

  • For a richer texture, substitute the milk with 1/2 cup milk and 1/2 cup heavy cream.
  • You can prepare the entire casserole (steps 1 through 4) the night before, cover it, and refrigerate. Add 5 to 10 minutes to the baking time if baking directly from the refrigerator.
  • This bake sets up firm, similar to a frittata, making it easy to slice for meal prep.

Nutrition

Find it online: https://miameal.com/denver-omelet-bake-recipe-casserole/