This berry compote couldn't be easier. Combine frozen berries and sugar with orange juice and zest in a slow cooker, and an hour and a half later, enjoy!
Stir frozen berries, sugar, orange juice, and orange zest together in a slow cooker. Cover and cook on High until bubbling, about 1 1/2 hours.
Stir cornstarch and water together in a cup until fully dissolved. Stir into berry mixture. Cover again and cook until thickened, 5 to 10 minutes. Serve warm or at room temperature.