Asaltado Vegetariano (Stir-Fried Vegetable Sandwich) | Saveur

Ingredients

• ¹⁄₄ cup mayonnaise
• ¹⁄₄ cup rocoto paste
• 1 tsp. fresh lime juice
• 2 tbsp. olive oil
• 1 medium red onion, thinly sliced
• 1 medium green bell pepper, stemmed, seeded, and thinly sliced
• 1 ají amarillo or banana pepper, stemmed, seeded, and thinly sliced
• 6 white button mushrooms, stemmed and thinly sliced
• 2 cloves garlic, finely chopped
• 1 (1"-piece) ginger, peeled and finely chopped
• 1 tbsp. soy sauce
• 1 tbsp. white wine vinegar
• 1 ripe tomato, cored, seeded, and thinly sliced Kosher salt and freshly ground black pepper, to taste
• 4 slices Monterey Jack cheese
• 2 (6") rectangular ciabatta buns, split and toasted
• 1 cup arugula
• ¹⁄₄ cup cilantro leaves