Muffins and quick breads behave like delicate cakes at altitude. Enter your elevation for the adjustments.
At altitude, muffins benefit from slightly less leavening, a bit more liquid, and a hotter oven so they set before over-rising. Fill cups a little less full, since they can balloon and overflow.
High-altitude baking is trial-and-error. These adjustments come from Colorado State University Extension guidance — the standard reference — but the right change depends on your exact elevation, oven, and recipe. Change one thing at a time and take notes.
Baking something else at altitude? Use the full high-altitude calculator.