– 1 and 1/4 cup (156g) all-purpose flour (spooned & leveled) – 1 and 1/4 cup (190g) yellow or vanilla boxed cake mix (not the whole box and you just need the DRY mix)* – 1/2 teaspoon baking soda – 1/2 teaspoon salt – 3/4 cup (12 Tbsp; 170g) unsalted butter, softened to room temperature – 1/2 cup (100g) granulated sugar – 1/2 cup (100g) packed light brown sugar – 1 egg, at room temperature – 1 and 1/2 teaspoons pure vanilla extract – 1 cup (180g) chocolate chips (I used 1/2 cup of white and 1/2 cup of semi-sweet chocolate chips) – 1/2 cup (80g) sprinkle