1-First Step: Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper or silicone baking mats to prevent sticking and promote even baking.

2-Second Step: In a medium bowl, whisk together the all-purpose flour, baking soda, salt, cinnamon, and nutmeg (if using). This ensures that the spices and leavening agents are evenly distributed throughout the cookie dough for consistent flavor and texture.

3-Third Step: In a large mixing bowl, beat the room-temperature unsalted butter with granulated sugar and light brown sugar for 2-3 minutes until light and fluffy but still slightly firm. This step aerates the mixture, contributing to a tender crumb and desired cookie texture.

4-Fourth Step: Add the vanilla extract and eggs one at a time, mixing thoroughly after each addition to ensure even incorporation and optimal binding of the dough.

5-Fifth Step: Stir in the finely grated fresh carrots. If desired, fold in old-fashioned rolled oats, raisins, and/or chopped pecans or walnuts for added chewiness and flavor complexity.

6-Sixth Step: Gently fold the dry ingredient mixture into the wet ingredients until just combined. Avoid overmixing to prevent excess spreading and maintain the cookies’ structure.

7-Seventh Step: Scoop rounded tablespoons of cookie dough about 2 tablespoons each onto the prepared baking sheets, spacing them about 2-3 inches apart to allow for spreading. Bake for 10-12 minutes, until the edges turn golden and tops appear set but soft. Larger cookies or those with mix-ins may require up to 18 minutes.

8-Final Step: Allow cookies to cool on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely. Prepare the brown butter cream cheese frosting by melting butter until golden and nutty, combining with softened cream cheese, powdered sugar, vanilla, cinnamon, and milk to desired consistency. Once cooled, frost the cookies individually or sandwich them. Store frosted cookies in an airtight container.