This Hazelnut Cranberry Pie is a delightful blend of sweet, tart, and nutty flavors. Fresh or frozen cranberries and chopped hazelnuts are layered in a flaky pie crust, then covered with a rich filling made from eggs, brown sugar, corn syrup, butter, and vanilla. As it bakes, the filling sets into a smooth, caramel-like custard while the cranberries add bright pops of tartness and the hazelnuts bring a warm, toasty crunch. The result is a beautiful pie with a perfect balance of sweet and tangy flavors—an inviting dessert for holidays, gatherings, or any special occasion.