Baking Powder (Best Option)
1 to 1 teaspoon per 1 teaspoon of yeastBaking powder is a chemical leavening agent composed of an acid and a base that react when moistened to release carbon dioxide gas. This gas creates bubbles in the batter, causing it to rise rapidly without fermentation time. This makes it ideal for muffins, which are quick breads that rely on immediate leavening rather than yeast fermentation.
For best results, ensure the batter is baked immediately after mixing to maximize leavening power. Avoid excessive mixing to maintain a tender crumb and prevent gluten development that can toughen muffins.
Compared to yeast, baking powder produces a more neutral flavor and a lighter, softer texture. It lacks the subtle fermentation flavors and chewiness yeast can provide but aligns better with typical muffin characteristics.