Place the chicken breasts in your slow cooker. Top with the passata, canned tomatoes, beans, red capsicum, yellow capsicum, red onion, cherry tomatoes and mexican spice blend. Place the lid on and cook on high for 6 hours. You can check after 4–5 hours and add 1 cup of water or stock if the liquid has evaporated too much.
4 chicken breasts, 700 g passata sauce, 400 g canned crushed cherry tomatoes, 400 g canned kidney beans, 1 red capsicum, 1 yellow capsicum, 1 red onion, 200 g cherry tomatoes, 3 tablespoons mexican spice blend