If you don't own an ice cream machine, but you want to make homemade ice cream, there are a couple of tricks you can do. The first is to make this recipe as you would until you get to the point of pouring the mixture into the ice cream machine. Instead of freezing with the machine, you can pour the mixture into ice molds and freeze.  Once frozen, allow to defrost slightly (about 5 minutes) and add to a blender. Blend until smooth. If you use this method you will achieve more of a soft serve ice cream. Instead of freezing with the peanut butter and jam, simply top the ice cream with them.  If you want the ice cream scoopable without an ice cream maker, you can use a metal bowl and an electric mixer or stand mixer. Make sure to freeze the metal bowl overnight. Then follow the previous steps, and pour the mixture into the bowl. Mix it for about 15 minutes, then pour it into a container and freeze. This will not be as light and fluffy as the ice cream machine, but it will help to keep it from freezing into a solid block.