Use cooked and well-drained spinach to avoid watery lasagna. Wilt fresh spinach or thaw frozen, then press or squeeze out as much liquid as possible. Mix with ricotta or bechamel for an even, creamy layer that keeps the pasta from drying out.
Assembly tips:
If using no-cook noodles, ensure enough sauce to hydrate pasta during baking. Bake covered for the first part of cooking to keep moisture, then uncover near the end for browning.
This approach yields a structured, creamy lasagna where spinach adds flavor, color, and extra nutrition without making the dish soggy.