My chapter-- gummy bears soaked in vodka. haha. It's a formals tradition.
Barbeque--we barbeque for just about everything...Bid Day, Dad's Weekend, Panhel Sister-Sorority events, philanthropy events.
Also breakfast pizza...we have it during finals week every year.

Phi Gamma Delta- pig :) Pig Dinner=LOTS of leftover pig. & Summer Brew.

Since a couple of people have mentioned venues rather than food...

My chapter had a tradition of going to IHOP after pref. There used to be an IHOP in Kenmore Square in Boston. Once we'd turned in our bid lists, we'd walk across the river (this is funnnnn in heels :p ) and head over to IHOP for a late night carb fest. It was rather amusing watching all the heads turn as a group of women wearing black dresses, heels, and pearl jewelry, with beautifully done hair and makeup, walked into IHOP, took over a couple of tables, and proceeded to scarf down chocolate chip pancakes, blueberry pancakes, waffles, etc.

Texas Sheet cake. When we were doing COB, the mother of two sisters would bring it our way almost daily. Someone would ask who was going to sign in Mrs. Jones, and most of the chapter would groan. She really did do it from love, though.

Silver Dollar Pancakes. When there was still a Pitt stadium, we would invite a LOT of people to our suite to have breakfast before the game. It was wonderful!

ETA: How could I forget? "Wretched" was unsweetened iced tea with a lot of lemons. It was also the go to drink of the sisters!

Um, what exactly does this breakfast pizza consist of?

Because it sounds amazing...

It's pizza crust with egg, cheese & bacon. It's SO bad for you but it's so good.

All this talk of Gumby's pizza is killing me. I've been craving pokey sticks all week. Actually think I'm going to end up going to buy stuff to try and recreate them.

Chocalate chip pancakes. We used to have them before every initiation.

When I was a freshman, the older sisters made a big deal of pumpkin squares. I know they were served at the pref party and probably at other nicer occasions, like the parents' tea. By the time I was a junior, though, they were pretty much forgotten about, for some reason.

As an advisor, I used to make a lot of a cakey chocolate cookies with M&Ms for rush parties. Also made lots of chocolates for prefs, hand dipped with cream cheese buttercream filling. One year, they actually had a skit (not a skit-oriented campus back then, which always surprised our national visitors) with a camp theme, so I made about a dozen dozen of those little hot dogs wrapped in crescent roll dough.

Doughnut Cake! There was a local donut shop in Austin (Dan's? Ken's? Can't remember, and don't know if it's still around) that would make a giant cake out of doughnut dough and then ice it with buttercream icing like a birthday cake. Yes...it was horrifying in terms of sugar & fat...but it was ridiculously good. We had it for all birthdays.

Chicken wings.

A restaurant in our union served 5 wings for 2 dollars every monday night. We always went down there on those nights, and they were great for recruitment as well.

William's Poppyseed Chicken Casserole (nothing else is necessary.)

I have another addition - I was reminded of this by the "what do you feel like saying" thread.

Vegetarian sushi.

My local sorority was first invited to participate in FR at the start of my sophomore year. We served vegetarian sushi at pref. My big sister knew how to make sushi rolls and had the required equipment, so she and I spent the afternoon making sushi rolls. Each roll contained cucumber and/or carrots, along with rice and seaweed. The few leftovers were devoured as we made up our bid lists.

For me it's Fuddruckers. We started Initiation at 9am, seldom ate breakfast beforehand and had a celebratory luncheon at Fuddruckers afterward.

I also always think of this dinner my big brother used to make when we shared an apartment. It was spaghetti with peas, bacon crumbles, and italian dressing as the sauce. I was skeptical at first, but it was so good!

Baked Alaska
 

If Chi Omega has a food tradition, I would say it's Baked Alaska. For many years at Convention, the banquet hall lights would dim and from around the room the waiters would enter with Baked Alaska flambe. It was an impressive scene and it tasted oh so delicious!