Slow Cooker Fresh Tomato Sauce

Preheat broiler.

On a baking sheet, toss onion, carrots and olive oil.

Broil until onion begins to caramelize, about 15 minutes.In a slow cooker, add onion and carrot mixture.

Mix with the rest of the ingredients.

Put lid on slow cooker and turn to low.

Cook for 4 hours.

Mix and turn on high.

Cook for another 4 hours.

Turn off slow cooker.

Using a hand blender, puree the tomato sauce until no large chunks remain.If freezing, let cool completely and freeze in heavy duty plastic bags.