Leviticus 2:5

2:5 If your offering is a grain offering made on the griddle, it must be choice wheat flour mixed with olive oil, unleavened.

Leviticus 8:26

8:26 and from the basket of unleavened bread that was before the Lord he took one unleavened loaf, one loaf of bread mixed with olive oil, and one wafer, ¹  and placed them on the fat parts and on the right thigh.

[8:26]  ¹ tn See Lev 2:4.