Preheat your oven to 375°F (190°C). Lightly grease a 7×11-inch baking dish with butter or nonstick spray.
Brown the sausage in a skillet over medium heat, breaking it into crumbles. Drain excess grease and set aside.
Whisk together eggs, milk, salt, pepper, garlic powder, and smoked paprika in a large bowl.
Layer cooked sausage, optional vegetables, and shredded cheese in the greased baking dish. Top with bread cubes if using, then pour the egg mixture evenly over the top.
Bake for 30-40 minutes, or until the center is set and the top is golden brown.
Let the casserole cool for 5 minutes before slicing. Serve warm and enjoy!
Notes
Customize the casserole by adding your favorite vegetables like bell peppers, spinach, or onions to suit your taste preferences.