Begin by cracking 6 large eggs into a spacious bowl and whisking them together until smooth. Gradually pour in 1 cup of milk while continuing to whisk, ensuring a creamy texture. Next, sprinkle in your desired spices, like salt and pepper, and mix well.

In a skillet over medium heat, add 1 pound of breakfast sausage. Cook until browned and fully cooked, about 8-10 minutes. Drain excess fat and set sausage aside.

In the same large bowl with the egg mixture, add 4 cups of cubed day-old bread and the browned sausage. Gently fold them together, allowing the bread to soak up the egg. Stir in 2 cups of freshly shredded sharp cheddar cheese until all ingredients are well-coated.

Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish. Pour the combined mixture into the dish, spreading it evenly.

If making ahead, cover the baking dish tightly with plastic wrap or aluminum foil and place in the refrigerator to meld flavors overnight.

When ready to bake, remove from the refrigerator and let it sit at room temperature for 10-15 minutes. Bake uncovered for 45-50 minutes, or until the top is golden brown.