Steak Sandwich

Ingredients

• 11 large ciabatta loaf or baguette(300g)
• 230 g unsalted butter, softened(30g)
• 315 ml olive oil(13g)
• 41 large yellow onion, thinly sliced(120g)
• 5450 g ribeye or flank steak(450g)
• 660 g mayonnaise(60g)
• 715 g Dijon mustard(15g)
• 82 cloves garlic, finely minced(6g)
• 94 g fine sea salt(4g)
• 102 g ground black pepper(2g)
• 114 slices provolone cheese(80g)
• 1250 g fresh wild arugula(50g)
• 131 medium medium tomato, thinly sliced(80g)

Instructions

1. 1Whisk mayonnaise, Dijon mustard, and garlic in a bowl to make aioli.
2. 2Pat steak dry, season with salt and pepper.
3. 3Heat olive oil in skillet, sear steak 3-4 minutes per side for medium-rare, rest 5 minutes.
4. 4Melt butter in skillet, sauté onions 8-10 minutes until caramelized.
5. 5Toast bread with remaining butter until golden.
6. 6Slice steak against the grain into strips.
7. 7Spread aioli on bread.
8. 8Layer steak, onions, provolone cheese, tomato, and arugula on bread.
9. 9Close sandwich, cut in half, serve immediately.