Tammy and the Bachelor (1957)

When Pete's plane crashes in the swamp, he's rescued by young Tammy, an unsophisticated backwoods girl who lives with her lay-preacher-cum-moonshiner grandfather. When Pete's well, he goes back home to his fiancée. But then Grampa gets sent to jail and he sends Tammy to stay with Pete. At Pete's house, Tammy's home cooking, enthusiasm and quaint sunshiny personality bring about changes in Pete's family and in Pete himself.