Creating the Cheesy Sausage Breakfast Casserole is simple if you follow these easy steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Cook the Sausage: In a large skillet over medium heat, cook the sausage until browned and fully cooked. Break into smaller pieces as it cooks. Drain any excess fat.
3. Whisk the Eggs: In a large mixing bowl, whisk together the eggs, milk, garlic powder, onion powder, salt, and pepper until fully combined.
4. Combine Ingredients: Add the cooked sausage to the egg mixture. Stir in the cubed bread and 1 cup of cheddar cheese. Mix well to ensure everything is evenly distributed.
5. Add Vegetables (if using): Gently fold in any optional chopped vegetables for added flavor and color.
6. Prepare the Baking Dish: Grease a 9×13-inch baking dish. Pour the mixture into the greased dish, spreading it evenly.
7. Top with Cheese: Sprinkle the remaining 1 cup of cheddar cheese on top of the mixture.
8. Bake: Place in the preheated oven and bake for 35-40 minutes or until the casserole is set in the center and slightly golden on top.
9. Cool Down: Once baked, allow the casserole to cool for about 5-10 minutes before serving, as this helps it to set further for easier cutting.
10. Garnish and Serve: Optionally sprinkle with fresh herbs before serving to elevate the taste and presentation.

These steps will guide you to prepare this incredible dish with ease, resulting in a comforting breakfast option that everyone will love!