Step 1: Preheat the Oven

Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone baking mat.

Step 2: Cream Butter and Sugars

In a mixing bowl, beat the softened butter, granulated sugar, and brown sugar together until light and fluffy.

Step 3: Add Wet Ingredients

Mix in the egg and vanilla extract until fully incorporated.

Step 4: Combine Dry Ingredients

In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry ingredients to the wet mixture, mixing until just combined.

Step 5: Fold in the Peaches

Gently fold the diced peaches into the cookie dough. Be careful not to overmix to avoid breaking down the peaches.

Step 6: Scoop and Shape

Using a cookie scoop or tablespoon, drop rounded spoonfuls of dough onto the prepared baking sheet, spacing them about 2 inches apart.

Step 7: Bake

Bake in the preheated oven for 12-15 minutes, or until the edges are lightly golden. The centers may appear slightly underdone, but they'll set as they cool.

Step 8: Cool and Serve

Let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely. Dust with powdered sugar or drizzle with white chocolate if desired.