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### **Step 1: Preheat the Oven**
Preheat your oven to **350°F (175°C)**. Grease a **9×13-inch** baking dish with butter or nonstick spray.
### **Step 2: Prepare the Egg Mixture**
In a large mixing bowl, whisk together the eggs, milk, salt, black pepper, and ground mustard until well combined.
### **Step 4: Bake the Casserole**
Cover the dish with aluminum foil and bake for **30 minutes**. Remove the foil and bake for an additional **15 minutes**, or until the top is golden brown and the center is set.
### **Step 5: Serve and Enjoy**
Let the casserole cool for a few minutes before slicing. Garnish with fresh parsley if desired and serve warm.
## **Serving Suggestions**
Pair this **Amish Sunday Savior** with fresh fruit, a side of crispy bacon, or a warm cup of coffee for the perfect weekend breakfast or brunch!