3 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1 teaspoon salt
1 cup unsalted butter, room temperature (Do not use margarine or any butter substitute. I only use Land O Lakes unsalted butter.)
¼ cup granulated sugar
1½ cups light brown sugar
2 large eggs
3 teaspoons vanilla
1 12-ounce package semi-sweet chocolate chips (I like Ghirardelli)
1 12-ounce package milk chocolate chips