""So easy and so good. I use frozen chicken breasts and cook on high for 4 hours in the slow cooker. The sauce is not thick, it is a bit runny, but very tasty. Add tomato paste if you want it thicker. Serve on top of pasta and sprinkle with Parmesan cheese. I use one can of crushed tomatoes and one can of diced tomatoes."..."
INGREDIENTS
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2 tablespoons olive oil
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4 skinless, boneless chicken breast halves, or more to taste