Let’s talk about baking powder and baking soda. These two ingredients show up in a lot of baking recipes, and they look ...

¾ cup unsalted softened butter, divided ¾ cup granulated sugar 1 large egg, at room temperature 2 tsp. vanilla extract, divided 1½ cups all-purpose flour 1½ tsp. cornstarch 1 tsp. baking powder ½ tsp.

Baking soda reacts with an acid to cause batters and doughs to rise and spread while baking. Baking powder reacts with liquid and heat to create a light, fluffy texture in baked goods. While they ...