Light coat the bottom of a 2-quart slow cooker insert with vegetable oil.
Slice the steak against the grain into thin slices. Place the flour in a Ziploc type bag and toss in the steak slices. Seal the bag and shake to coat the and the steak with the flour.
Remove from the bag and place the steak on the bottom of a 2-quart the slow cooker insert.
Top the steak slices with the onion mix, steak sauce, tomatoes and beef broth. Cover and cook on High for 5 hours. Check the steak is fully cooked and tender.
Serve over noodles or mashed potatoes.
Notes
It's very easy to adjust this meal to serve more people. Proportionally increase the other ingredients as you increase the amount of steak.
Serve with roasted potatoes, mashed potatoes, or over noodles.
The steak is wonderful the next day, served inside of a roll for a tasty lunch.
Storing Any Leftovers
Refrigerate: Store leftovers in an airtight container in the fridge for up to 2 days.
Freeze: Let cool completely, then freeze in a single-serving container for up to 2 months. Thaw in the fridge overnight before reheating.
Reheat: Warm gently in a small saucepan over low heat or microwave in 1-minute intervals until hot, stirring between each.