Pissaladière with a Twist - Edible Santa Barbara and Wine Country

Ingredients

• 9 ounces all-purpose flour (unbleached (2 cups))
• 5 ounces butter (chilled, cut into small pieces)
• 1 large egg
• Zest of 1 lemon
• 1 pinch salt
• Olive oil
• 4 large yellow onions (peeled, halved and finely sliced)
• Coarse sea salt
• Black pepper
• 1 cup Romanesco broccoli (sliced)
• 1 small zucchini (cut into 1/4-inch-thick slices)
• 1 small yellow squash (cut into 1/4-inch-thick slices)
• 2 ounces soft goat cheese (chilled and sliced)
• Basil flowers (or small basil leaves for decoration)