Identify your goal: strand texture for a bowl/base, or quick volume for tossing into sauce.
Choose the closest match: zucchini noodles for fast strands, roasted butternut for tender squash flavor.
Use the 1:1 ratio as a starting point for volume; measure by “cups of strands” for best results.
If your substitute is watery (zucchini or cabbage), salt (10 minutes) or sauté longer and pat/squeeze lightly.
Finish by tossing briefly with sauce off-heat, then let it rest 1–2 minutes so strands cling instead of pooling.