The recipes for these christmas-themed building roof blocks can occasionally be found in randomly spawning Holiday Gift-boxes during christmas-times - like from December 14th 2015 until January 13th 2016.
To craft 8 Gingerbread Roofs at once you'll need (as of R26 in December 2015):
- 1 (block of) Snow from Taiga-biomes, Mountains, Frozen Deserts, frozen Oceans, Canyon-tops, snowy Tundras and the like, or as a loot/pet-havest from Arctic Mirus
- 1 Gingerbread Loaf made in the Cooking Station with the "Bread" recipe of Wheat (grown from Seeds found in Tallgrass) and Molasses (from Arctic Mirus, Blizzard Chizzards or Rambeaus
- 2 Stone Rods made of Stone, Limestone or Bedrock in a Processor