Baking Powder (Best Option)
1 teaspoon per 1 cup of oatmealBaking powder is a chemical leavening agent that releases carbon dioxide gas when moistened and heated, causing the oatmeal to become lighter and fluffier. Unlike yeast, it does not require fermentation time, making it ideal for quick-cooking oatmeal.
To use baking powder effectively, mix it thoroughly into the oatmeal before cooking to ensure even distribution. Avoid overuse as it can impart a slightly metallic or bitter taste.
Compared to yeast, baking powder produces a more neutral flavor and a quicker rise, resulting in a softer texture without the yeasty aroma or tang.