2 1/4 cups ap flour
1/2 tsp baking soda
1/2 tsp baking powder
1/2 tsp salt
3/4 cup unsalted butter, very soft
1 cup brown sugar
1/2 cup sugar
2 large eggs
2 tsp vanilla extract
6-ounces dark/bittersweet chocolate, chopped
6-ounces white chocolate, chopped
Preheat oven to 350F.
In a medium bowl, whisk together flour, baking soda, baking powder and salt.
In a large bowl, cream butter and sugars. Beat in eggs one at a time, along with the vanilla extract. Gradually beat in flour mixture at a low speed, stopping when just combined. Stir in chocolate chunks.
Drop by rounded tablespoons onto a parchment lined baking sheet and bake at 350F for 12-15 minutes, until the cookies are lightly browned at the edges.
Allow to cool on the baking sheet for about 5 minutes before transferring to a wire rack to cool completely.
Store in an airtight container.