Chuck Hughes' Tomato Pie with Herb Salad

Ingredients

• 6 sheets phyllo pastry
• 1 cup cold butter (cut up and melted)
• 6 large field tomatoes (divided)
• 2 tsp kosher salt (divided)
• 1-1/2 cups White Canadian Cheddar Cheese (freshly shredded)
• 1/2 cup Gruyere cheese (freshly shredded)
• 1/2 cup mayonnaise
• 2 large eggs (lightly beaten)
• 1 tsp sugar
• 1 tsp salt
• 1/4 tsp ground black pepper
• 1/2 red onion (sliced paper-thin)
• 1 tbsp instant tapioca
• basil leaves
• 2 tbsp fresh dill sprigs
• 2 tbsp fresh basil leaves
• 1 tbsp snipped fresh chives
• 1 tbsp fresh flat-leaf parsley (chopped)
• 1 cup baby arugula
• 1 tbsp apple-cider vinegar
• 2 tbsp olive oil