Good pie's have butter!
Contractions are used sometimes. Here it is pies not pie's.
"Plăcinta" is actually a typical pastry in Moldova and Romania. It's more Iike a flat bread, that can be both salty or sweet, usually filled with cheese (brînză de vacă și mărar) or jam or potatoes and they are pan-fried. Miss them...
It will help the readers to see an actual example. La Placinte is a restaurant chain in Romania that serves fairly authentic Romanian food. It's very good though on the pricey side.
Study this page: https://laplacinte.ro/ro/pages/menu/13/
is "n-are" a contraction?
Yes, and it's an acceptable translation. Either "n-are" or "nu are" is OK; you might use the latter for emphasis: "O plăcintă NU are unt!" when arguing with someone who claims it does.