The Easy-Bake Oven, currently a product of Hasbro, is a working toy oven that for many years used an ordinary light bulb as a heat source, but now has a true heating element. Eleven versions of the Easy-Bake Oven have been sold. By 1997, more than 16 million Easy-Bake Ovens had been sold.The oven comes with packets of pastry mix and small round pans. (Additional mixes can be purchased separately.) After water is added to the mix in the pan, it is pushed into the oven through a slot. After cooking, the cake is pushed out through a slot in the other end.