Gather all your ingredients.

In a large mixing bowl, combine the ricotta, mozzarella, and Parmesan cheeses.

Crack the egg into the cheese mixture and stir until fully incorporated.

Add garlic powder, salt, black pepper, and parsley to the cheese mixture.

Using a spatula, mix everything together until smooth and fully combined.

Taste the cheese mixture and adjust the seasonings if necessary.

Prepare your baking dish with sauce to prevent sticking.

Layer the cheese mixture between sheets of pasta and sauce in your baking dish.