Buckwheat Crêpes With Apple Compote and Walnuts

Name: Buckwheat Crêpes With Apple Compote and Walnuts
Ingredients: 1 cup buckwheat flour; ¼ cup molasses; 1 large egg; ¾ cup buttermilk; ½ tsp. kosher salt; 1 Tbsp. unsalted butter; 1 Tbsp. almond oil (or substitute light olive oil), plus more for oiling the crêpe pan; 1 Tbsp. molasses; 3 firm apples (such as Honey Crisp or Granny Smith), cored and thinly sliced; 2 tsp. cornstarch; ¾ tsp. ground cinnamon; ½ tsp. ground ginger; ¼ tsp. ground nutmeg; Kosher salt; ⅔ cup coarsely chopped walnuts, divided; ¼ cup Greek yogurt, for serving (optional)