Preheat oven to 350°F. Line baking sheets with parchment paper.
In a large bowl, cream together butter and sugars until light and fluffy.
Add eggs one at a time, stirring until combined. Stir in vanilla.
In a separate bowl, whisk together flour, baking soda, and salt. Slowly add dry ingredients to the wet ingredients, stirring until just combined.
Stir in sour cream until combined. Scoop cookie dough onto baking sheets, about 2 tablespoons per cookie. Bake for 12-14 minutes, until edges are golden brown and centers are set.
Allow cookies to cool on baking sheets for 5 minutes before transferring to a wire rack to cool completely.
Interesting Facts
Sour cream adds a fluffy texture and a subtle tangy flavor to these cookies.
For an extra burst of flavor, add 1/2 cup of chocolate chips to the dough.
Store these cookies in an airtight container for up to 3 days.