Preheat your oven to 350°F (175°C). This ensures your cookies bake evenly and achieve that perfect golden color.
In a medium bowl, whisk together the all-purpose flour, baking soda, and salt. This mixture will provide the structure for your cookies.
In a large mixing bowl, use an electric mixer to cream the room-temperature unsalted butter, brown sugar, and granulated sugar together until light and fluffy. This process should take about 2-3 minutes.
Beat in the eggs, one at a time, until fully incorporated. Next, mix in the vanilla extract and lemon zest. The zest will add an extra punch of flavor!
Gradually add the dry ingredient mixture to the wet ingredients, mixing until just combined. Be careful not to overmix, as this could lead to tougher cookies.
Gently fold in the quick cooking oatmeal and white chocolate chips until evenly distributed throughout the dough.
Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheets, leaving about 2 inches of space between each cookie. Bake in the preheated oven for 10-12 minutes, or until the edges are lightly golden. The centers may look a little underbaked, which is perfect for a chewy texture.
Once baked, allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a cooling rack to cool completely. Enjoy your Lemon White Chocolate Chip Cookies with a glass of milk or a warm cup of tea!