Open-Faced Steak And Onion Sandwich

• 2 tbsp olive oil
• 1 None large red onion, peeled and sliced into thin rings
• 1 tbsp brown sugar
• 1 x 6 oz thin-cut rump or sirloin steak
• 2 tbsp mayonnaise
• 1 tsp wholegrain mustard
• 1 None medium tomato, sliced
• None Handful watercress
• 1/2 loaf ciabatta, lightly toasted

1. Heat 1 tbsp oil in a small frying pan; fry onion for 10 mins, stirring occasionally, until golden and soft. Add the sugar; cook, stirring, for a further 2 mins until the sugar has dissolved and is slightly syrupy. Remove the onions and juices from the pan; keep warm.
2. Heat the remaining oil in the pan. Season the steak and cook over a high heat for 1-2 mins each side, or according to taste.
3. Mix the mayonnaise and mustard. Layer the tomato, watercress and onions on the toasted ciabatta. Place the steak on top; spoon over the mustard mayonnaise. Serve immediately.

olive oil, red onion, brown sugar, mayonnaise, wholegrain mustard, tomato, handful watercress

Taken from recipes-plus.com/api/v2.0/recipes/26728 (may not work)