In A Medium Bowl, Mash Butter Beans. Mix In Onion, Jalapeno Pepper, Crushed Crackers, Egg, Cheese, Garlic Powder, Salt, And Pepper. Divide Into 4 Equal Parts, And Shape Into Patties. Heat Oil In A Large Skillet Over Medium-High Heat; Use More Or Less Oil To Reach 1/4 Inch In Depth. Fry Patties Until Golden, About 5 Minutes On Each Side.