Precooked lasagna and it seems dry.
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Can you add some details to clarify this? Is there a specific recipe you followed? Is this par-cooked or fully cooked for cooling and reheating later? Photos are helpful if you can add them.
Depending on the type of lasagna - I would make a sauce that matches it and serve it with the sauce pooled under or dolloped on top. For example, if this is a standard lasagna with a tomato sauce, make more of the tomato sauce (no meat) and serve it with that.