Spiced Orange Hazelnut Croissant Buns With Cinnamon Sugar

"These cinnamon, orange, and hazelnut morning buns are on the blog today! Made with flaky croissant dough and filled with a mixture or toasted hazelnuts, orange zest, a pinch of cinnamon, and some butter and brown sugar. And then I rolled the whole thing in cinnamon sugar! Everybody needs a bit of extra padding for the winter, right?"