Chewy Birthday Cake Cookies

0 Preheat the oven to 350 degrees. Line 2 baking sheets with parchment paper. 
1 In a large mixing bowl combine the butter and granulated sugar. Combine using a mixer. Beat for a few minutes. 
2 Scrape down the sides of the bowl and add your egg and vanilla extract. 
3 Slowly add in the flour, baking soda and salt. Mix the ingredients together on low speed just until combined. Cookie dough will be dry and incredibly fluffy. Add in sprinkles and mix just until the sprinkles are distributed throughout the dough.
4 Use a cookie dough scoop to scoop out the cookie dough and place it on the baking sheets. These ccookies will spread so make sure there is enough room in between. 
5 Bake for 11 to 13 minutes, cookies should be golden brown around the edges. Mine were perfect at 12 minutes.