We’ve actually had other square Pyrex Hostess pieces for quite awhile now - but they’ve been the yellow ones. We recently picked up these two covered Pyrex Red Hostess casseroles. The first is a 2.5 quart covered casserole with #525-Bon the bottom. The second smaller one is a 1.5 quart covered casserole with #515-B on the bottom. The lids have the equivalent numbers but with a “-C”.
For a long time, we’ve struggled with classifying just how the different casseroles were sold - the books on Pyrex aren’t exactly definitive (at least one seems to mistakenly list the turquoise square chip/dip as hostess casseroles - although later we realized there is a covered version of this as well). I think we’re ready to at last to try and take a stab at shedding some light on these great dishes.
So far, we have seen three types of boxed sets of these square dishes sold - in two basic colors, red and yellow (others may exist, but these are the most common). These sets are called “Hostess Oven and Table”, “Hostess Casserole and Table” and “Hostess Covered Casserole”.
The “Hostess Oven And Table” set contained a 2.5 quart large #525 bowl and 4 smaller 12 oz. ramekins or bowls. There was NO LID in this particular set.
The “Hostess Casserole And Table” set contained a 1.5 quart large covered #515 bowl and 4 smaller 7oz. ramekins or bowls. This one DID contain a lid.
So, you might ask, where did we get the lid for the larger #525 bowl then? The thing is that they also sold these #525 bowls separately WITH LID. These boxes were labeled “Hostess Covered Casserole”.
Hopefully this will clear things up a bit. Again, this isn’t definitive in any way - there may be other configurations of these sets. Please write in if you have more correct info that can be verified by original boxes or pictures. There is also reportedly a “larger” covered bowl than the 2.5 quart, but we haven’t seen that one yet in person.