pumpkin seems to be in the minority so far as flavors - ginger more prevelent...
seems these cookies are made in a multitude of shapes...
mold for round - other eBay offerings for rectangular
https://www.ebay.com/itm/264214988833
recipe
https://www.foodnetwork.com/recipes/food-network-kitchen/yakgwa-11931061
info, no recipe
https://www.reddit.com/r/KoreanFood/comments/hrumv1/korean_yakgwa_약과_is_a_traditional_tea_cookie_that/
linked recipe
https://kimchimari.com/yakgwa-or-yakwa/
more history, but not recipes
https://www.sweetoothdesign.com/cookie-yakgwa