Delicious Steak With Onion Marinade

Another I've not tried, but looks good! Times are an estimate till I make it. Please let me know how long it took if you make it first!

• Ready In: 25 mins
• Serves: 4

Ingredients

• 1  tablespoon olive oil, plus extra
•  olive oil
• 1  large red onion, thinly sliced
• 1  tablespoon light brown sugar
• 2  tablespoons  balsamic vinegar
• 4  steaks

Directions

1. Heat the oil in a heavy-based pan and cook the onion over a low heat for 15 minutes, until soft.
2. Add the sugar and vinegar and simmer until syrupy.
3. Season, tip into a dish and set aside.
4. Heat a non-stick griddle or frying pan until very hot.
5. Add the steaks and cook for 1 ½ minutes on each side. (Longer if you prefer it well done).
6. Top the steaks with the onion and serve with spinach, roasted tomatoes and mashed potato on the side.