galette — Les Petites Gourmettes

Ingredients

• 1 1/4 cups flour, placed in the freezer for 1 hour before using
• 1/4 teaspoon salt
• 8 tablespoons unsalted butter, cut into 1/2-inch pieces, and placed in the freezer for 1 hour
• 1/4 cup sour cream
• 2 teaspoons fresh lemon juice
• 1/2 cup ice water
• 1 large sweet potato, peeled and sliced
• 2 tablespoons olive oil
• Salt and freshly ground black pepper
• 1 cup shredded Fontina cheese
• 1 cup caramelized onion jam, at room temperature or chilled
• 1/2 cup cooked sliced chicken breast, at room temperature or chilled
• 1 medium heirloom tomato, seeded and diced