Sausage and Mushroom Breakfast Casserole
Start your morning right with this hearty and flavorful Sausage and Mushroom Breakfast Casserole! Packed with savory breakfast sausage, earthy white mushrooms, and a melty layer of sharp cheddar cheese, this dish is the ultimate comfort food to kick off your day. The combination of fluffy eggs, cubed day-old bread, and a touch of ground mustard for depth makes for a perfectly golden, custardy casserole that’s both filling and bursting with flavor. Ideal for weekend brunch, holiday mornings, or meal prep, it’s easy to make and serves a crowd in just over an hour. Whether you’re hosting guests or treating your family, this make-ahead breakfast casserole is sure to become a new favorite.
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Recipe Information
Ingredients
- 1 pound breakfast sausage
- 8 ounces white mushrooms
- 1 medium onion
- 2 cloves garlic
- 8 pieces large eggs
- 1.5 cups whole milk
- 1 teaspoon salt
- 0.5 teaspoon black pepper
- 0.5 teaspoon ground mustard
- 2 cups sharp cheddar cheese, shredded
- 4 cups day-old bread, cubed
- 1 tablespoon butter (for greasing the baking dish)
Instructions
Preheat your oven to 375°F (190°C). Grease a 9x13-inch baking dish with butter and set aside.
In a large skillet over medium heat, cook the sausage until browned and fully cooked, breaking it into small pieces as it cooks. Transfer the cooked sausage to a plate lined with paper towels to drain excess grease.
In the same skillet, add the mushrooms and cook for 4-5 minutes until they release their moisture and become golden brown. Remove from the skillet and set aside.
Dice the onion finely and mince the garlic. Add them to the skillet and sauté until the onion is translucent and fragrant, about 3 minutes. Remove from heat.
In a large mixing bowl, whisk together the eggs, milk, salt, pepper, and ground mustard.
Stir in the shredded cheddar cheese, cooked sausage, mushrooms, onion, and garlic.
Gently fold the cubed bread into the egg mixture, ensuring all the bread is soaked in the mixture.
Pour the mixture into the prepared baking dish, spreading it out evenly.
Bake uncovered in the preheated oven for 45-50 minutes, or until the casserole is golden brown on top and a knife inserted into the center comes out clean.
Let the casserole cool for 5-10 minutes before serving. Slice into squares and enjoy!
Nutrition Facts
Calories |
5965 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 303.7 g | 389% | |
| Saturated Fat | 128.5 g | 642% | |
| Polyunsaturated Fat | 0.4 g | ||
| Cholesterol | 2081 mg | 694% | |
| Sodium | 13298 mg | 578% | |
| Total Carbohydrate | 546.0 g | 199% | |
| Dietary Fiber | 36.8 g | 131% | |
| Total Sugars | 61.3 g | ||
| Protein | 269.5 g | 539% | |
| Vitamin D | 13.5 mcg | 67% | |
| Calcium | 3053 mg | 235% | |
| Iron | 46.6 mg | 259% | |
| Potassium | 4272 mg | 91% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
