Based on many threads talking about American-Chinese, Tex-Mex, British-Indian, etc. loads of our favorite dishes are the result of globalization or fusion (if not all once we start talking about the traveling of tomatoes, potatoes, etc.).
However, in a very stripped down calculation of Culture A + Culture B = Food Item Awesome, I would like to nominate the halva filled doughnut/sufganiyah. The Middle Eastern/Arabic halva/tahina meets the European-Jewish jelly doughnut to create my favorite doughnut. Add some toasted pistachios on top, and I'm very happy.