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Muffin Troubleshooting Guide

Diagnose dense, dry, gummy, tunneled, sunken, pale or stuck muffins.

By Miriam L. HarcourtUpdated July 26, 2026
Useful approach: Look for patterns across measurement, mixing, oven, pan and storage.

Dense or low

Possible causes include old leavener, too much flour, a cold oven or a batter overloaded with wet additions. Check measurements before adding more leavener.

Dry or tough

Overbaking, overmixing, excess flour or too little fat/liquid can contribute. A different pan colour may also change edge baking.

Gummy or sunken

The centre may be underbaked, the batter too wet or the structure overwhelmed. Opening the oven early can also contribute in some recipes.

Practical checklist

  • Use a tested recipe as the baseline.
  • Measure flour and leavener carefully.
  • Keep notes when changing ingredients or pans.
  • Cool completely before long-term packaging.
Editorial note: Bakery menus, ingredients, prices and availability change. This guide explains comparison factors and practical methods; it does not claim that every bakery or product was personally tested.