I will provide you with a recipe. Your task is to adapt it to fit [Dietary Restriction e.g., Vegan, Keto, Gluten-Free, Nut-Free]. Provide a list of necessary substitutions and explain how these changes might affect the cooking time, texture, or flavor of the final dish. Ensure the adapted version remains as delicious as the original.
Original: Classic Lasagna (with beef and cheese). Adapter (Vegan):