Jamieson, Fausset and Brown on Amos 4:5

5. offer--literally, "burn incense"; that is, "offer a sacrifice of thanksgiving with burnt incense and with leavened bread." The frankincense was laid on the meat offering, and taken by the priest from it to burn on the altar (Le 2:1, 2, 8-11). Though unleavened cakes were to accompany the peace offering sacrifice of animals, leavened bread was also commanded (Le 7:12, 13), but not as a "meat offering" (Le 2:11).

this liketh you--that is, this is what ye like.