Foraineam Set of 12 Pcs 6 oz Porcelain Souffle Dishes, White Ramekins Bakeware Set Dessert Custard Baking Cups for Baking, Cooking, Serving and More

Q: Do these fit in Chicago Metallics tray?

There are several sizes of Chicago Metallics trays so I’m not sure if I’ll be answering your question appropriately. I’ve not used all 12 at one time either. I use 6 to bake custard and my recipe calls for a 9” x 13” cake pan to be filled with water within 1/2” from the top of the cups therefore the pan needs to be 2” deep. If you don’t need to add water and are using a cookie sheet, you can probably fit all 12 on it. I hope that helps. They are very nice, sturdy dishes.