Leviticus 2:4
And if thou bring an oblation of a meat offering baked in the oven, it shall be unleavened cakes of fine flour mingled with oil, or unleavened wafers anointed with oil.
Leviticus 7:12
If he offer it for a thanksgiving, then he shall offer with the sacrifice of thanksgiving unleavened cakes mingled with oil, and unleavened wafers anointed with oil, and cakes mingled with oil, of fine flour, fried.