flourless no-bake instant stovetop skillet sugar cookies
Karumeyaki (also known as dalgona) and popki (sugar cutouts) are examples of flourless sugar cookies made in copper skillets. Precise timing of the release of carbon dioxide from baking soda seems to be key in making instant puffy sugar cookies.
Pictures and a video demonstration:
I like that it's simple (in theory!) Have you tried making any? Any other ideas for skillet cookies?