Preheat your oven to 350 degrees F. Combine the flour, cocoa powder, baking soda and salt with a whisk; set aside. In a large mixing bowl, beat together the butter and sugars until creamy. Add the pudding mix and then beat in the eggs one at a time. Stir in the vanilla extract and continue to mix until fully combined. Add the dry ingredients to the wet ingredients until just combined. Gently stir in the peppermint crunch baking chips.