Lemon frosting is a bright, tangy, and creamy topping that can elevate any cake or cupcake. This versatile frosting can be used to frost cakes, fill layer cakes, or top cupcakes for a delightful citrus flavor.
In a large bowl, beat the softened butter with an electric mixer until light and fluffy, about 2-3 minutes.
Gradually add the confectioners' sugar, beating well after each addition, until the frosting is smooth and creamy.
Mix in the lemon juice, lemon zest, and salt until well combined.
Store the frosting in an airtight container in the refrigerator for up to 1 week. Before using, let it come to room temperature and re-whip it briefly to restore the light and fluffy texture.
To explore taste variations, try adding a teaspoon of vanilla extract or a pinch of cinnamon. For decoration, consider swirling the frosting with the back of a spoon or sprinkling toasted coconut, chopped nuts, or lemon zest on top.