Roast Chicken with Onion and Sumac Flatbread (M'sakhan) | Saveur

Ingredients

• 1 ¹⁄₂ cups flour, plus more
• 1 tsp. kosher salt, plus more to taste
• ³⁄₄ cup water, heated to 115°
• 1 ¹⁄₂ tsp. sugar
• 1 (1/4-oz.) package active dry yeast
• 1 (3 1/2-4-lb.) chicken, quartered
• Freshly ground black pepper, to taste
• ³⁄₄ cup olive oil, plus more for greasing
• ¹⁄₂ cup ground sumac
• ¹⁄₂ tsp. ground allspice
• ¹⁄₂ tsp. ground cinnamon
• 2 large yellow onions, minced
• ¹⁄₂ cup chicken stock
• 2 tbsp. unsalted butter
• 1 cup slivered almonds