Prep Time 15 minutes mins
Cook Time 20 minutes mins
Total Time 35 minutes mins
Slow Cooker Method: Alternatively, after cooking the onions and garlic you can place everything in a slow cooker and cook on LOW for 3-4 hours. Once pureed in the blender, return the sauce to the slow cooker and continue to cook uncovered if the sauce needs thickening. Cook until desired thickness is reached.