Thick Crêpes with Sautéed Apples (Kouigns Bigoudens aux Pommes)

Ingredients

• 1 cup warm milk
• 1 tsp. active dry yeast
• 1 Tbsp. plus 1 tsp. sugar
• 1 ¹⁄₃ cups flour
• 1 tsp. ground cinnamon
• ¹⁄₄ tsp. salt
• 1 egg, at room temperature
• 8 Tbsp. unsalted butter, plus more
• 6 Tbsp. unsalted butter
• 6 small red apples, such as Gala, cored and cut into 6 wedges each
• 6 Tbsp. sweet hard apple cider
• ¹⁄₄ cup sugar
• Confectioners' sugar, to serve