Thinly slice the cabbage.
Cut the ciabatta bread in half.
Heat olive oil in a pan and sauté the cabbage.
Season the cabbage with salt and pepper.
Spread Greek yogurt on one half of the ciabatta bread.
Place the sautéed cabbage on top of the bread.
Slice cherry tomatoes thinly and place them on the cabbage.
Cover with the other half of the ciabatta to complete the sandwich.