In your crockpot, combine cranberries, hulled strawberries, granulated sugar and light brown sugar, followed by allspice, cinnamon, and ginger. Stir until well mixed.

Cover and set the crockpot to high heat for 4 hours, stirring halfway through.

After 4 hours, blend the mixture using an immersion blender until it reaches a desired consistency.

Ladle the jam into clean jars, leaving some space at the top and seal loosely with lids.

Let the jars cool at room temperature completely before sealing tightly and refrigerating.

Enjoy your jam on toast, pastries, or in a cheese platter.