Cascade Grill

If you’re planning to visit the Oregon zoo with plans of having lunch there, I would recommend the cascade grill.
First off, the restaurant is very clean and has a nice atmosphere to enjoy dining with your family and friends.
Price: The menu prices are bit more expensive here than within the park at the African café however as I shared the atmosphere in my opinion is well worth considering.
Price examples: a classic burger is $ 8.50 here and what I have found to be the same quality burger at African Café was $ 5.75 as I recall. Just an example.
Service and friendliness of staff was good and the menu items that we chose were found to be very good overall. I give it a 4 rating due to the price of the menu items I found were at least 2 to 3 dollars more than the African café for the same type of quality and offerings. I also have taken into consideration the menu and dining choices at the zoo itself. From my experience a 4 rating is what you should expect I would think especially in comparing your options here.
The one additional advantage for this dining option is that it also offers a few beer choices which are not available within the park itself that I could find.