EditGenerate cobblestone > Smelt into stone > Craft stone bricks > Smelt into cracked stone bricks.
very specificEdit
Generate cobblestone > Mine cobblestone > put wood and cobblestone into furnace > smelt it into stone > use wood craft a crafting table > craft some stone bricks on crafting table > put the stone brick and some wood into furnace again and smelt > final you will get cracked stone bricks!
Can you explain more step than me?lol