I visited Universal Studios Hollywood twice in the past year. The initial visit was to see the park for the first time (alongside Disneyland). A few months later, my schedule and budget allowed me to go a second time to see Hollywood's version of Halloween Horror Nights.
First food in the park was from a hot dog cart in the upper lot. I ordered the Californian. This was a Nathan's hot dog topped with guacamole, diced tomatoes, cilantro, and Takis. Very topping heavy. They were really generous with the guacamole and cilantro, which I won't argue with.
When I returned a few months later, I walked by this same hot dog stand. All of the interesting hot dog toppings were replaced with basically one option: A 22" Chili Cheese Dog. Nowhere as exciting...
I tried a brownie from the French Street Bistro.
I had this during Halloween Horror Nights. I had a Strawberry Spiral Croissant. This round croissant was partially stuffed with whipped cream, with some strawberries topping the cream. Pretty tasty.