The World's Greatest Ham Sandwich

Name: The World's Greatest Ham Sandwich
Prep time: 15 min
Total time: 15 min
Cuisine: World Cuisine
Ingredients: 1 c. mayonnaise; 2 tbsp. freshly chopped parsley; 2 tsp. freshly chopped thyme; 1 tbsp. extra-virgin olive oil; 2 cloves garlic, minced; 8 slices crusty bread, such as sourdough or ciabatta; 1/2 c. herb mayo; 1/4 c. Dijon mustard; 12 slices deli ham; 8 slices provolone; 1 arugula; 1 tomato, thinly sliced; 1/2 red onion, thinly sliced