minetest.register_craft({
output = 'funnystone:funnystone',
recipe = {
{'group:wood', '', ''},
{'', '', ''},
{'', '', ''},
}
})
minetest.register_craft({
output = 'funnystone:funnystonebrick',
recipe = {
{'group:cobble', 'funnystone:funnyblock', ''},
{'', '', ''},
{'', '', ''},
}
})
print(dump(minetest.get_all_craft_recipes('funnystone:funnystone')))
print(dump(minetest.get_craft_recipe('funnystone:funnystone')))

#####
OUTPUT AFTER sapier's fix d902bd31c4b9e8c2a0d85af831a5a23f827a48a2
####
{
        {
                type = "normal",
                width = 3,
                output = "funnystone:funnystone",
                items = {
                        "group:wood"
                }
        }
}
{
        type = "normal",
        width = 3,
        items = {
                "group:wood"
        }
}