Step-by-Step Instructions

1. Preheat Your Oven

Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper or lightly grease it.

2. Make the Cookie Base

In a mixing bowl, beat the softened butter and granulated sugar until light and fluffy. Beat in the egg and vanilla extract until well combined. If using lemon zest, stir it in now.