Wash all vegetables thoroughly under cold water.
Remove the outer leaves of the green and red cabbage.
Cut the cabbage into quarters and shred finely.
Grate the carrot using a box grater.
Dice the bell pepper into small pieces.
Halve the cherry tomatoes and set them aside.
Thinly slice the red onion and chop the parsley.
In a large bowl, combine the shredded cabbage, carrot, bell pepper, tomatoes, and onion.
In a separate bowl, whisk together the olive oil, apple cider vinegar, salt, and pepper.
Pour the dressing over the salad and toss gently to combine.