Cut the chuck flap steak into bite-sized pieces.
Dice the carrots, potatoes, and onions.
Heat olive oil in a pot and sear the chuck flap steak on both sides until browned.
Add the vegetables and sauté together.
Add tomato sauce, salt, and pepper.
Pour in water or stock and bring to a boil.
Simmer on low heat for 40 minutes.
Add herbs to taste if desired.
Serve the finished stew in a bowl.