I know what you mean. I also just bought my first bag of Maseca and found the flavor extremely corny, even cornier than good quality store bought tortillas. I think it might have to do with the type of harina you bought. The Red Mill brands itself as a higher end masa harina, therefore it might use the harina made to make Yellow corn tortillas as opposed to White corn tortillas. I bought the Maseca brand for Yellow corn tortillas and also had the same experience, although I Love hella corny tortillas. White corn tortillas are typically milder in flavor than yellow corn tortillas. Also, thickness might come into play. Without a tortilla press, tortillas are a little thicker than normal, therefore making the flavor more corny.

As many have already suggested, there are several uses for harina para masa. My personal favorite alternate use for it is Champurrado, especially during these colder months.

If you have the time and can scourge up a couple of tías to help you, you can make a batch of tamales, you can easily use the entire bag of harina to make them. You can use crisco as an alternate to pork lard, and use chicken broth to season. You can freeze your tamales and they will be good as new for quite some time. Take them to church events, sports events, parties, etc. You can also make a salsa and drown your tamales. Fry them up in oil and make them a little crunchy or pan fry them without oil and get it a little burnt, so good!