You don’t need fancy ingredients to make a cookie that wows. These Brown Sugar Cookies are soft, flavorful, and guaranteed to satisfy your sweet tooth!
Preheat oven to 350 degrees Fahrenheit (175 degrees Celsius). Line a baking sheet with parchment paper or a silicone baking mat; set aside.
In a large mixing bowl with a hand-held mixer or the bowl of a stand mixer, add the butter. Mix on low for 1 minute until smooth. Add brown sugar and mix on medium until smooth and creamy, about 2 minutes.
Add egg, egg yolk, and vanilla extract; mix on low until combined.
In a medium mixing bowl, whisk together the flour, cornstarch, baking powder, baking soda, and salt. With mixing speed on low, gradually add the dry ingredients; mix until combined.
Using a standard-size cookie scoop, portion the cookie dough and roll it into smooth balls using your hands. Roll each cookie in granulated sugar, then place 12 cookies onto the prepared sheet.
Bake for 8-9 minutes or until set. The centers will be very soft but will set as they cool. Remove from the oven and allow to cool on the sheet for 5 minutes before transferring to a wire rack to cool completely. Bake the remaining dough as instructed.
Notes
STORE these Sugar Cookies in an airtight container at room temperature for up to 5 days. To FREEZE, place in a sealed container or freezer bag for up to 3 months.To keep your brown sugar soft for future baking, transfer it from the plastic bag to a sealable, airtight container. If it has hardened, add a slice of white sandwich bread to the container; the sugar will absorb moisture from the bread and soften within 1-2 days.