Remove extra fat from the steak and season both sides with Montreal seasoning.
On medium heat, in the cast iron or big skillet heat olive oil. Add steak and cook on both sides until beautiful brown color. Slice the meat and transfer to a crock pot.
Mix water with cornstarch then pour it into the crock pot. Add beef broth. Add garlic, bell pepper, tomatoes, onion, soy sauce, sugar, salt and pepper. Give it a good stir. Cover and cook on High for 3 - 4 hours, or cook it on Low 6 - 8 hours. Serve with hot spaghetti, sticky rice or mashed potatoes. Enjoy!
Notes
Store leftovers in airtight container inside the refrigerator for up to 3 days. Use cast iron if you have it for browning steak for best browning result, if you don't have cast iron skillet, use a regular skillet. Serve with mashed potatoes, cauliflower rice or cooked pasta.