Q: I would like to make Pizza, but I have only one oven in which I cook my fleishig food uncovered. Can I make the Pizza? How? Also, If I bake cakes in my fleishig oven, can I eat them with milchigs? Thank you.
A: Horav Shlomo Miller Shlit”a is of the opinion that you may bake an uncovered pizza in a fleishig oven if the oven has been cleaned and has been kept at high temperature of 500 F for 25 minutes. If a cake was baked in a fleishig oven (when no meat was present) without undergoing the above process it is still permissible to eat it with milk.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a