Enamelwear is okay, but glass does not brown your bottoms. I have been baking for along time and it is not the first time that I have found Betty's advise to be taken with a grain of salt. She is not always right. I find that for the best pies really are done in a tin foil pie plate. Really good flaky crust, and nice golden color. Glasswear tends to undercook your crust. Just because she has a book or two does not make her the queen of the kitchen.