Exodus 29:2, 3, 23

And from the finest wheat flour make round loaves without yeast, thick loaves without yeast and with olive oil mixed in, and thin loaves without yeast and brushed with olive oil.

Put them in a basket and present them along with the bull and the two rams.

From the basket of bread made without yeast, which is before the LORD, take one round loaf, one thick loaf with olive oil mixed in, and one thin loaf.