Yes. Personally my taste testers all preferred the icing which is why I went this route, but you can make pastry crosses instead. Simply mix together 1/2 cup all-purpose flour (65g), 1 1/2 Tablespoons granulated sugar, and 1/4 cup water (60ml). The mixture should be thick enough to pipe, add more flour if needed. Then, pipe crosses over the buns before baking (use a piping bag or a ziploc bag with a corner snipped off), brush with egg wash if desired, and bake. After baking you can brush with some melted apricot jam for added sweetness, if desired.