Vegetable Provencal Tart

Ingredients (14)

• 1 large sweet Vidalia onion halved and sliced into 1/3-inch pieces
• 2 tbsp Parmesan cheese freshly grated
• 1 medium zucchini cut diagonally into 1/8-inch long slices
• 0.5 tsp black pepper divided
• 1 tbsp Dijon mustard
• 2 tbsp olive oil
• 0.33 cup ice water
• 1.5 tsp fresh thyme chopped
• 0.5 tsp kosher salt divided
• 2 medium tomatoes cut into 1/4-inch slices
• 1 tsp balsamic vinegar good-quality
• 1.5 cup all-purpose flour
• 1 nonstick cooking spray nonstick
• 0.25 cup fresh basil chopped