Step 1

In a small bowl, combine flour, salt, corn starch and baking soda. Whisk to combine and set aside.

Step 2

In a separate medium bowl, cream together butter, sugar and brown sugar until light and fluffy. This should take about 2-4 minutes. Add in egg and vanilla and beat to incorporate fully.

Step 3

Slowly add in the dry ingredients into the wet ingredients and beat just to incorporate (do not over mix!) Gently fold in sprinkles. For best results, roll into about 1 to 1 1/2 inch balls and chill for about 15 minutes before baking.

Step 4

While cookie dough is chilling, preheat oven to 350°F.

Step 5

Place cookie dough balls/scoops two inches apart on parchment lined cookie sheet. Bake 9-11 minutes, cookies will be puffed up and may not look 100% done, but pull them just before you think they are done. Allow to cool completely and enjoy. Store in an airtight container for about 3-5 days.