Ingredients
Method
- Preheat oven to 300 degrees F
- Cook ingredients on the stove top until softened
- Puree softened ingredients (immersion blender works great for this)
- Pour the tomato sauce into a roasting pan (non-stick is best, with straight sides)
- Roast at 300 until it thickens, stirring periodically
- When your spatula leaves a clear path when sweeping the bottom of the pan, it has reduced sufficiently
- Pour into ice cube trays, freeze, then vacuum seal the cubes