I packed in my suitcase, chopped green peppers, dried onions, shredded cheese, a package of frozen turkey bacon, package of bagels, whipped cream cheese, lunch meat for sandwiches and ...... Jack Daniels. I put a small freezer packet in the bag and everything was still frozen when the bag arrived in our room via Magical Express 10 hours later. We use this method on every trip with great success and just purchase eggs and bread upon arrival.
I take the bulk of my food, as I need to bring my own for religious dietary reasons.
I take already cooked frozen food (e.g. chicken, rice, meatballs, chow mein, rice, fish), refrigerated food (e.g. salami), bread, snacks, cereal, even milk and orange juice. I have never had a problem.
I put them in those aluminized insulated bags along with freezer packs.
Pillsbury "pop and fresh" tubes most likely will not "explode," as the luggage holds in planes are now pressurized. After all, they can also ship live animals in there!
The only oddity I've encountered is that the NSA virtually always opens and inspects my bag, I assume due to the aluminized bags looking odd on the X-Ray machines.
The first time it happened I didn see the note, but I knew my zippers weren't in the right spot. I noticed the letter at bedtime lol. We take boxes of cereal, easy mac,peanut butter, jelly, bread (in Rubbermaid)and snacks. 
you can pack anything that is not considered hazardous in checked luggage. Those bringing peanut butter may get their suitcase opened.