Ingredients

• 1/4 cup canola oil
• 1 medium onion, chopped
• 1 (28 ounce) can crushed tomatoes
• 1 (8 ounce) can tomato sauce
• 1 (10.75 ounce) can tomato puree
• 2 1/2 tablespoons garlic powder
• 2 tablespoons dried oregano
• 2 tablespoons dried basil
• 2 tablespoons salt
• 2 tablespoons white sugar
• 2 teaspoons ground black pepper

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Instructions

1. Heat the canola oil in a skillet over medium heat, and saute the onion until tender.
2. In a slow cooker, mix the onion and remaining oil, crushed tomatoes, tomato sauce, tomato puree, garlic powder, oregano, basil, salt, sugar, and pepper.
3. Cover slow cooker, and cook sauce 8 hours on Low.