Egg is the top-ranked Flaxseed substitute for Muffins, chosen for how well it preserves Muffins's structure, moisture, and flavor. 1 options are ranked on this page by Muffins-specific applicability.
Flaxseed plays a specific role in Muffins — structure, rise, moisture, or flavor — and substitutes that miss the role relevant to Muffins rank lower here than they might elsewhere. The list above is tuned to Muffins, not to generic baking or cooking.
Start with the listed ratio but watch for Muffins-specific warnings below each card — some subs need a moisture tweak, heat adjustment, or companion ingredient to work in Muffins. Taste a small batch before committing.