Cream together the softened unsalted butter, brown sugar, and granulated sugar until light and fluffy.
Mix in one large egg and one teaspoon of vanilla extract until fully incorporated.
In a separate bowl, sift together flour, baking soda, baking powder, and salt. Slowly add to wet ingredients until just combined.
Gently fold in the chocolate chips until evenly distributed. Chill the dough in the fridge for 1-2 hours.
Preheat oven to 350°F and prepare a baking sheet. Scoop out balls of dough onto the sheet.
Bake for 8-10 minutes until golden around the edges but still soft in the center. Let cool on the baking sheet.