Preheat oven to 350 degree F.
In large bowl, beat together butter and sugar with an electric mixer on medium speed until creamy. Add egg and vanilla and mix until combined.
In another bowl, whisk together flour, baking soda, and salt. Add to butter mixture. Mix on low speed until thoroughly combined.
Use 1-1/2 inch (diameter) cookie scoop to portion out balls of dough. Place cookie balls about 2-inches apart on a parchment lined baking sheet.
Bake for 10-12 minutes until the edges of the cookie are set. Allow to cool on baking sheet for 3 minutes and then transfer to a wire rack to cool to room temperature.