Farinata with Sage, Olives, and Onion

Ingredients

• 1 cup chick-pea flour 
• 4.5 tablespoons olive oil 
• 30  niçoise olives pitted
• 1.3 teaspoons salt 
• 2 cups water cold
• 0.5 large onion white thinly sliced

Equipment

• frying pan
• ladle
• oven
• whisk
• broiler
• cutting board
• pizza stone

Directions

1. At least 1 hour before making farinata, set a pizza stone on rack in upper third of oven and preheat oven to 550°F.
2. Whisk together chick-pea flour and water until smooth, then whisk in salt and 2 tablespoons of oil.
3. Let stand at least 30 minutes at room temperature.
4. Cook onion with salt to taste in 1 tablespoon oil in a large heavy skillet over moderate heat, stirring occasionally, until golden, about 10 minutes, then cool.
5. Put a seasoned 10-inch cast-iron round griddle on pizza stone and heat 10 minutes.
6. Remove pan from oven and add 1/2 tablespoon oil, tilting to coat evenly. Working quickly, stir batter and ladle about 7/8 cup (1 cup minus 2 tablespoons) evenly into pan (batter will sizzle and start to set almost immediately). Quickly scatter a third of the onion, olives, and sage leaves over the batter and carefully return pan to pizza stone. If using an oven with a built-in broiler, bake 12 minutes, then turn oven setting to broil for 1 to 5 minutes. If using an oven with broiler underneath, bake 15 minutes, then transfer pan to broiler for 1 to 2 minutes. Edges should be golden brown and crisp and top flecked with golden spots.
7. Slide farinata onto a cutting board. Make 2 more in same manner, reheating pan 5 minutes for each successive farinata. Halve farinata and cut into strips.