Grilled Spiced Cauliflower Sandwiches :: The Meatwave

Ingredients

• For the Pickled Red Onions
• 1 medium red onion, peeled and thinly sliced
• 1 jalapeño, stemmed and thinly sliced
• 1 cup apple cider vinegar
• 1 cup water
• 1 tablespoon sugar
• 1 teaspoon kosher salt
• For the Cauliflower
• 2 teaspoons kosher salt
• 2 teaspoons ground turmeric
• 1/2 teaspoon crushed red pepper
• 1/2 teaspoon ground cumin
• 1/2 teaspoon ground coriander
• 1/2 teaspoon powdered ginger
• 1/2 teaspoon garlic powder
• 1/2 teaspoon yellow mustard powder
• 1/2 teaspoon freshly ground black pepper
• 1/8 teaspoon cayenne pepper
• 1 head of cauliflower, cut into large florets
• 2 tablespoons extra-virgin olive oil
• For the Roasted Garlic Mayo
• 6 medium cloves garlic
• 1/2 cup mayonnaise
• For the Sandwiches
• 8 slices sourdough bread
• 4 slices mild provolone cheese
• 2 handfuls fresh arugula