Pissaladiere | Two Jade Bowls

Ingredients

• 2 tablespoons olive oil
• 2 tablespoons unsalted butter
• bunch of thyme
• 3.5 pounds onions, very finely sliced
• sea salt, to taste
• freshly ground black pepper, to taste
• 4.5 teaspoons active dry yeast
• 2/3 cups lukewarm water
• 1 teaspoon sugar
• 2 cups unbleached flour
• 1/2 teaspoon salt
• 4 tablespoons olive oil, plus extra for brushing
• 1 cup black Mediterranean olives such as Kalamata, pitted