Open Face Steak Sandwich
For the Onions
3 Tbsp unsalted butter
1.75kg onions, peeled and
finely sliced
To make the onions, melt the butter in a medium-size pan over medium heat. Add the onions, season with salt and cook until lightly caramelised and golden. Remove from the heat and set aside.
For the Steaks
3kg beef sirloin
salt and freshly ground black pepper
To cook the steaks, preheat the Hub BBQ to medium heat. Season the sirloin on all sides with salt and freshly ground black pepper. Take the spit attachment and add on the first fork, the add the meat is and the final fork. Push the forks together to hold the meat in place. When the coals are ready, place the spit on setting 2 and begin the rotation. Monitor the heat topping up the coals as needed. It is important to maintain a surface temperature of around 70-80°c. Allow the sirloin to reach a core temp of 52°C, then lower the setting to 1 to colour the meat. Remove the spit and rest the meat on a cooling rack placed over a tray and allow to rest for 5 minutes before thinly slicing against the grain.
For the Mustard Vinaigrette
40g White wine vinegar
40g Dijon or wholegrain mustard
120g Groundnut or grapeseed oil
Make the mustard vinaigrette by combining the vinegar and mustard in a bowl. Slowly whisk in the oil until fully emulsified. Season with salt. You will not use all the vinaigrette, but it will store well, covered in the fridge for several weeks.
To Finish the Sandwich
20 slices Pain de Campagne (Country loaf)
olive oil
250g blue cheese
2 bunches watercress mustard vinaigrette
Brush the slices of bread with a little oil and place over the hot BBQ until grill marks are visible. Remove from the heat. Place the steak slices on top of the grilled bread and spoon over the onion.
Toss the watercress in just enough mustard vinaigrette to lightly coat. Finish the sandwich by crumbling over the blue cheese and topping with the dressed watercress.

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