These are in reference to my contribution of Lamb Fries and Rocky Mtn. Oysters.
Whoa dudes. My post was partially in jest.
Your standards are a little harsh. By your reasoning, every single mention of meat has been done 100s of thousands of years ago. Grain, veggies, and fish are out too as possibly unique as someone ate them in the distant past. Uniqueness for all foods and dishes is in the ingredients, preparation method, and presentation. Lighten up. Have a great new year.
Perhaps you’re thinking Falafel ?
Not that any food is to be attributed to Islam: just to those peoples and cultures who are temporarily muslim. They have such foods before, and will after.
No religious form is eternal. Even Hot Cross Buns will survive christianity.
But can he survive Broomstick? 
Thursday 
well, tbh I don’t really care so far as any of it tastes good, but it’s only going to get “worse.” We’re too mobile and intertwined for us to try to keep our food from staying “pure.” I mean, a “national dish” of England (chicken tikka masala) is neither English nor Indian, but it’s heavily inspired by Indian cuisine. I think we’re just going to have to get used to “styles” of cuisine rather than worrying about whether a particular dish is authentic.
As an example, a cousin of mine started his bachelor party pub crawl at Punch Bowl Social in downtown Detroit. I got there, looked at the menu, and thought “what a bunch of hipster nonsense.” Whatever, ordered their Cuban sandwich. It didn’t look like what a Cuban sandwich was supposed to look like, but it was probably the most phenomenal sandwich I’ve ever eaten.
you can pry my falafel from my cold dead hands.
you can buy corn on the cob, roasted, with bbq sauce, in Japan. It’s street food, along with lots of other “stuff on sticks”. And the issue with corn isn’t whether you serve it with the cob, but whether you grow sweet corn at all, or only grow feed corn. Sweet corn is unusual in Europe.
Greek food and middle eastern food is very much the same
No, the Cajuns were expelled from Acadia (mostly the modern Maritime Provinces) by the British. Most did not go willingly.
That’s because much of it is Turkish food, originally. The Ottoman empire had a major culinary impact on its provinces.
Except a lot of it is made with pork in Greece. I was really surprised to find “souvlaki” in Greece that was pork.
Some that haven’t been mentioned yet:
Maryland steamed crabs
Maryland crab cakes
Jambalaya
Crawfish/shrimp/etc. etouffee
Shrimp remoulade (especially combined with fried green tomatoes)
Red beans and rice
Dirty rice
Bananas Foster
Muffuletta
Andouille sausage
Pineapple upside-down cake
Chicken/turkey/… Tetrazzini
Hoppin’ John
Chocolate chip cookies
I’m pretty sure that chocolate chip cookies are popular outside the U.S. now. They should be - they’re great. It’s not clear to me whether the OP is looking for foods that are eaten only in the U.S.
Another question is how distinctive a food must be to be considered uniquely American. Jambalaya is similar to paella. There are many beans-and-rice dishes from around the world, so are red beans and rice and Hoppin’ John really unique? You could make a case that a muffuletta is just an Italian antipasto plate in a sandwich.
I was thinking of mentioning chocolate chip cookies. 
Cookies aren’t all that common outside the US, even.
Not buying this one, either. Marinated, grilled meat is another of those things from everywhere they had fire and meat. There is no one, single fajita marinade that is distinctive. Every cook has hir own version. Generally, the whole concept of cultural appropriation makes my ass itch, but SW/Tex-Mex cuisine is a little too heavy on Anglos making some minor tweak and then claiming to have invented the dish.
Yeah, fajitas is really borderline-to-no for me. I don’t really understand what is so unique about them compared with the countless types of taco dishes served throughout Mexico.
Boston Baked Beans, baby!
I win this thread. I ask that you pay me my prize in small, untraceable bills.
Moderators (3 finger snaps)! You may close this thread now.
Not this again. Someone’s going to pop in with “Europeans don’t like peanut butter” soon, aren’t they?
Korea and China don’t really have breakfast foods. Most people just eat the same stuff for breakfast that they would have for dinner. England and Ireland have distinctive breakfasts (but they are similar to each other). Canada has breakfast meals similar to the US’s, I guess. How common is the Denny’s Grand Slam-type breakfast outside the US?
this I can get along with. breakfast for me today was leftover turkey and stuffing (we did ham at thanksgiving and turkey at Christmas this year.) I’ve had bacon, eggs, and toast for dinner numerous times. Hell, even the plentiful Coney Island diners in my area serve “breakfast” dishes all day.
well, there are things like the Full English and the Ulster Fry, but I doubt too many people eat those on a regular basis.
Funnell cakes
Scrapple
Soft-shelled crabs
But the whole idea of appropriation is silly. I also object to it as applied to literature.
I’ll try a Baked Alaska with all of these others too 