Alsatian Breakfast Sausage Casserole

Breakfast / Brunch

Alsatian Breakfast Sausage Casserole

Rise and shine! Sausage, Gruyère, apple, and rye come together for one heck of a sweet & savory breakfast egg casserole. Gruyère is a Swiss cheese with complex flavors that are creamy, fruity, and nutty. It pairs well with the sweet, yet tart, flavor of Honeycrisp apples.


8 servings

Total Time

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Test Kitchen Tip

Worried about the casserole dripping over the sides? Set a baking sheet on the rack below or right underneath the baking dish.


Preheat oven to 375°. Coat a 7×11-inch baking dish with nonstick spray.

Brown sausage in a sauté pan over medium-high heat until almost fully cooked, 5 minutes.

Add onion and sauté until softened, 3 minutes. Transfer sausage mixture to a paper-towel-lined plate.

Whisk together eggs, milk, mustard, sage, and salt; season with pepper.

Arrange bread in bottom of prepared baking dish; top with apple, 1½ cups cheese, and sausage mixture. Pour egg mixture over sausage, taking care it doesn’t spill over, then top casserole with remaining ½ cup cheese.

Bake casserole until cheese is browned, eggs are set, and a thermometer inserted into the center registers 160°, about 45 minutes.


Brown the sausage, then transfer it to a paper-towel-lined plate to drain. It will finish cooking later.


This casserole is layered so that you get a taste of all the ingredients with every spoonful.


Begin adding the egg mixture a bit at a time, paying attention to how full the dish is so it doesn’t spill over.

Nutritional Facts

Nutritional Facts

Per serving

Calories: 441

% Daily Value*

Total Fat 31g 47%

Saturated Fat 10g 50%

Cholesterol 203mg 67%

Sodium 720mg 30%

Carbs 18g 6%

Protein 22g

*Percent Daily Values are based on a 2,000 calorie diet.

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