Biscuits and gravy is AMAZING! Gosh, talking about this is reminding me of all the food I can make haha. I am absolutely terrible at cooking but biscuits and gravy are also really quick and easy to make and are delightful. Highly recommend. But I've heard "biscuits" in Europe are cookies, so dunno if you'd be able to find biscuit-biscuits haha
But yeah I hateeee cooking but grilled cheese and tomato soup takes under 15 minutes including prep and cooking and clean up. Takes longer to eat than it does to cook haha.
I am not a big sausage person, but I know some people eat frankfurters (we just call them franks haha) and bratwursts (brats haha) -- brats are often a hot-dog alternative at cook-outs and sometimes franks, too. We also have smoked sausage. There's also andouille sausage, but that's only down in Louisiana.
I've never heard of onion cake but it looks amazing and now I want one! And we have quiches... I don't know that I'd say they're necessarily rare -- I'd say most people have had/heard about them -- but I didn't have one until I was an adult and have only had them a few times since, so they're not super common, either. That was actually one of the weird things about Thailand (to me) -- KFC (Kentucky Fried Chicken) here has a side of mac and cheese that is absolutely delightful. I occasionally get cravings for it even when I'm here. So when I saw a KFC in Thailand I was like !!!! mac and cheese time !!!! and was SO excited to go -- and they had egg-tart for sides instead of mac and cheese. And it was fine. But I was so sad xD

