Description
This Egg Bake Overnight Breakfast Casserole is a hearty and customizable dish perfect for a busy morning or feeding a crowd. Featuring sausage, fresh vegetables, eggs, and cheese, it can be baked immediately or prepared in advance, even frozen for convenience.
Ingredients
Scale
Sausage Mixture
- 10 to 12 ounces sausage (casing removed)
- olive oil (as needed for sautéing)
Vegetables
- 2 cloves garlic (minced)
- 3 cups fresh spinach (90g)
- 2 large bell peppers (diced)
- ½ medium yellow onion (diced)
- salt and pepper (to taste)
Egg Mixture
- 12 large eggs
- ½ cup milk (any type, 120g)
- ½ cup shredded cheese (any flavor, 56g, divided)
Instructions
- Prepare the casserole dish: Spray a 7 x 11" or 9 x 13" casserole dish with non-stick spray and set aside. If baking immediately, preheat your oven to 375ºF (191ºC).
- Brown the sausage: In a large skillet over medium heat, brown the sausage until cooked through. For fully cooked sausage, you can skip or lightly brown it for extra flavor. Then evenly spoon the browned sausage into the prepared casserole dish and set aside.
- Sauté the vegetables: Add a little olive oil to the same skillet if needed. Sauté the minced garlic, spinach, diced bell peppers, and diced onion until vegetables are tender and spinach is wilted, about 6-7 minutes. Season with salt and pepper in the last minute. Remove from heat.
- Combine sausage and vegetables: Add the cooked vegetable mixture to the sausage in the casserole dish. Stir roughly to distribute evenly, then set aside.
- Mix eggs and cheese: In a medium bowl, whisk together the eggs, milk, and ¼ cup of shredded cheese. Pour this egg mixture evenly over the sausage and vegetable mixture in the casserole dish. Sprinkle the remaining ¼ cup cheese on top and add a little more salt and pepper to taste.
- Bake the casserole: If not already preheated, set the oven to 375ºF (191ºC). Bake the casserole for approximately 45 minutes or until the edges start to brown and the center is set. Allow it to cool for at least 15 minutes before serving.
- Store and reheat: Leftovers can be refrigerated for up to 5 days. Reheat individual servings in the microwave as needed.
- Freeze option: The unbaked casserole can be tightly wrapped with plastic wrap and foil and frozen for up to 2 months. Thaw overnight in the refrigerator and bake at 350ºF (177ºC) for about 20 minutes or until heated through before serving.
Notes
- This casserole can be baked immediately or made up to 24 hours in advance and refrigerated before baking.
- Customize with your favorite vegetables or use any cheese flavor to suit your taste.
- Use fully cooked or raw sausage depending on your preference; browning adds flavor.
- Freezing allows for convenient meal prep and feeding larger groups.
- Allowing the casserole to cool before cutting improves texture and presentation.
Nutrition
- Serving Size: 1 serving
- Calories: 197 kcal
- Sugar: 2 g
- Sodium: 303 mg
- Fat: 14 g
- Saturated Fat: 5 g
- Unsaturated Fat: 8 g
- Trans Fat: 0.1 g
- Carbohydrates: 4 g
- Fiber: 1 g
- Protein: 13 g
- Cholesterol: 223 mg
