Yes! While an ice cream machine makes things easier, you can "churn" it by hand. Simply blend the base and freeze in a container. Every 30 minutes, take it out and stir it vigorously with a whisk to break up ice crystals. Repeat until frozen to your desired consistency. Note: using an ice cream maker will give you noticeably smoother and creamier ice cream, but making it without an ice cream maker will still taste good - the texture will be more grainy, however.