Combine grapes, sugar, and cinnamon in a slow cooker. Cook on low for 4 hours.

Once cooked, blend the mixture until smooth.

Warm the tortillas in a pan. Fill each tortilla with the grape mixture and cheese, then roll tightly.

Place the rolled taquitos on a baking sheet.

Preheat the oven to 400°F (200°C). Bake the taquitos for 15-20 minutes until crispy.

Serve warm with sour cream and salsa on the side.