Rashi on Leviticus 8:26/רש"י על ויקרא ח׳:כ״ו

1וחלת לחם שמן AND A CAKE OF OILED BREAD — This was a scalded cake, and it is called “oiled bread” because he used a large quantity of oil for it, equal to that which he used for the cakes and wafers together. So is it explained in Treatise Menachot 78a (also Menachot 89a).