Have you ever had pecan pie? It's really good.
It's one of my favourites! I wonder how you make it?
I think it involves a lot of nuts, sugar and eggs.
I am pretty good at making pie dough- there's a secret to making it flaky. 
It definitely reflects the history of the United States
"As American as apple pie"..is that what you mean?
Yes, apple pie is a great type of pie. A lot of apples needed to make it
Where do apples grow best in the US? Do you know?
Not sure about the U.S., but they definitely grow them in Europe and Asia
And Canada too, but only the warmer parts like British Columbia.