Breakfast Casserole

  • Level: Easy
  • Yield: 6 servings
  • Total: 7 hr (includes refrigerating time)
  • Active: 25 min


8 ounces spicy or sweet turkey sausage links, casings removed, meat crumbled

2 scallions, sliced

6 large eggs and 6 large egg whites 

1 3/4 cups 1-percent milk

Kosher salt and freshly ground black pepper

One 9-ounce package frozen chopped spinach, thawed and drained of excess liquid 

3/4 cup shredded Cheddar

1/2 cup grated Parmesan

1/2 whole wheat baguette, cut into 3/4-inch cubes (about 4 cups)

Cooking spray


  1. Heat a large nonstick skillet over medium heat. Add the turkey and scallions and cook, stirring to break up any large chunks, until browned and cooked through, about 10 minutes. Remove from heat and let cool slightly.
  2. Whisk the eggs, egg whites, milk and 1/2 teaspoon each salt and pepper in a large bowl until combined. Add the cooked sausage, spinach, cheeses and bread and toss to distribute the ingredients evenly.
  3. Spray a 3-quart casserole dish with cooking spray. Spread the egg mixture evenly in the dish. Cover and refrigerate for at least 6 hours or preferably overnight.
  4. Preheat the oven to 350 degrees F. Bake the casserole, uncovered, until set and lightly browned on top, about 30 minutes.

Cook’s Note

Make-Ahead Tip: You can freeze the baked casserole for up to 2 weeks. Cover with foil and reheat at 350 degrees F until hot, 35 to 45 minutes.

Let's Get Cooking!

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27 Reviews


This was so delicious!  I followed a reviewers tip on the egg whites. I use my hand mixer with the whisk attachment and whisked the egg whites until they were light and fluffy.  I also used the hand mixer with the whisk attachment to whisk the eggs and milk mixture. I then folded in the cheese, spinach, bread  and turkey sausage. once that was mixed well I lastly folded in the egg whites and mixed until combined. I cooked my frozen spinach and drained it really well before adding. I also use the entire 16 ounce package of sweet turkey sausage links.  When I measured the bread cubes for 4 cups,  I ended up using almost 3/4 of the whole grain baguette.  I did not realize this had to be sat overnight when I went to make it this morning. Once everything was combined I placed the assembled casserole in the fridge for about 1.5 hours before cooking.   I cooked in the middle of the oven in a 9x13 glass dish for 35 minutes. Delicious and the casserole was fluffy.  taking the casing off the sausage was a breeze, I thought that was going to be really hard. Recommend this dish and I will make this again. 

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