Ultimate Steak Sandwich by Kaithompson

Ingredients

• 1 ciabatta bread
• 2 slices havarti cheese
• 8 oz flank steak
• 1 tsp salt
• 0.5 tsp black pepper
• 2 tbsp neutral oil
• 1 tbsp butter
• 2 cloves garlic, minced
• 1 sprig fresh herbs (e.g., rosemary, thyme)
• 2 onions, thinly sliced
• 2 tbsp butter
• 1 tbsp worcestershire sauce
• 1 tbsp balsamic vinegar
• 0.25 tsp salt
• 0.25 tsp black pepper
• 4 slices bacon
• 8 asparagus spears
• 0.25 cup grated parmesan reggiano
• 2 tbsp fresh parsley, chopped
• 4 tbsp mayonnaise
• 2 tbsp grainy dijon mustard
• 1 tsp worcestershire sauce
• 1 tbsp hot sauce
• 0.5 tsp garlic powder

Instructions

1. Mix sauce ingredients: mayo, grainy dijon, 1 tsp worcestershire, hot sauce, garlic powder, salt, and pepper. Set aside.
2. Melt 2 tbsp butter in a pan over low heat. Add sliced onions and sweat for 10-15 minutes until softened.
3. Add 1 tbsp worcestershire, balsamic vinegar, 0.25 tsp salt, and 0.25 tsp black pepper to the onions. Cook low and slow for another 20-25 minutes, deglazing with a tablespoon of water as needed, until deeply caramelized.
4. Preheat oven to 400°F (200°C).
5. Wrap 2 asparagus spears with 1 slice of bacon. Repeat for all asparagus.
6. Bake bacon-wrapped asparagus for 12-15 minutes, or until bacon is crisp and asparagus is tender.
7. While asparagus bakes, season flank steak with 1 tsp salt and 0.5 tsp black pepper.
8. Heat 2 tbsp neutral oil in a skillet over medium-high heat. Sear steak for 3-4 minutes per side for medium-rare.
9. Add 1 tbsp butter, minced garlic, and herbs to the skillet. Baste the steak with the butter for 1 minute.
10. Transfer steak to a cutting board, tent with foil, and let rest for 5-10 minutes before slicing thinly against the grain.
11. Slice ciabatta bread in half horizontally and place Havarti cheese slices inside. Toast in a pan or oven until cheese is melted.
12. Assemble sandwich: spread sauce on the toasted ciabatta, layer with sliced steak, caramelized onions, fresh parsley, bacon-wrapped asparagus, and a sprinkle of parmesan.
13. Add more sauce on top and close the sandwich. Top with black pepper.