Chop cabbage, onion, carrot, bell pepper, and tomato into bite-sized pieces.
Heat olive oil in a pot and sauté the onions and carrots.
Add cabbage and bell pepper and stir-fry together.
Add tomatoes and water, then bring to a boil.
Season with salt and pepper.
Simmer over medium heat for 20 minutes until all the vegetables are cooked through.