Open-Face Steak Sandwiches with Green Onion Salsa

Ingredients

• 2 sirloin steaks , about 250 g each, at room temperature
• 1/2 tsp salt
• 2 ciabatta buns
• 1 142-g pkg baby arugula
• 1 283-g pkg multicoloured cherry tomatoes , halved

Green Onion Salsa

• 7 tbsp olive oil , divided
• 12 green onions , ends trimmed
• 1/2 tsp salt
• 1/3 cup white wine vinegar
• 1 jalapeño , seeded and finely chopped
• 2 tsp granulated sugar
• 1/2 cup chopped parsley