Creating Biscuit and Gravy Casserole is a delightful process. Follow these easy steps:

1. Preheat your oven to 350°F (175°C).
2. Cook the sausage: In a large skillet over medium heat, cook the breakfast sausage, breaking it apart as it cooks until browned and fully cooked. Drain excess grease if necessary.
3. Make the gravy: Sprinkle the flour over the cooked sausage. Stir to combine and cook for an additional minute. Gradually add the milk while stirring continuously to avoid lumps. Cook until the gravy thickens, about 5-7 minutes. Add garlic powder, onion powder, salt, and black pepper. Remove from heat.
4. Prepare the biscuits: Open the refrigerated biscuits and cut each biscuit into quarters.
5. Layer the ingredients: In a greased 9×13-inch baking dish, spread the biscuit pieces evenly on the bottom. Pour the prepared sausage gravy over the biscuit pieces, ensuring they are thoroughly covered.
6. Add cheese (optional): If using, sprinkle the shredded cheddar cheese over the top of the gravy.
7. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes or until the biscuits are golden brown and cooked through.
8. Garnish: If desired, sprinkle with fresh parsley before serving.

With these straightforward steps, you will find that preparing Biscuit and Gravy Casserole is both accessible and enjoyable.