This is a very wintery, spicy muffin recipe that is perfect for entertaining during the holiday season. It has a fruity orange aroma with hints of cloves and cinnamon, which pairs really well with the added chocolate chunks and cookie crumbs. If you cant find spekulatius cookies where you live, substitute any crunchy spicy (e.g. gingersnaps) cookie or make your own. If you use a different cookie, you might want to up the spices and/or add additional ginger and nutmeg.