In a medium bowl, combine 1 3/4 cups of the flour, the baking powder, baking soda and salt. In a small bowl, blend cocoa and remaining 1 cup of flour.
Begin layering: Spoon half of the flour-cocoa mixture into the jar. Press down to flatted (a small spice jar works well). Spoon half the plain flour mixture over the cocoa layer; compact. Repeat. Top with brown sugar layer and granulated sugar layer, compacting each. Top with chocolate chips and finish with butterscotch chips.
Attach a note with baking instructions: In a large bowl, combine1 cup (2 sticks) unsalted butter with 3 eggs, 1/3 cup milk and 2 teaspoons vanilla extract. Stir in contents of jar just until combined. Drop dough by the tablespoons full onto baking sheets. Bake at 350°F for 13 minutes, or until firm. Let the cookies cool on the sheet for 2 minutes before transferring them to a wire rack to cool completely.
Keyword brown sugar, butterscotch chips, semisweet chips