Vegan Spiced Blueberry Breakfast Cake

Name: Vegan Spiced Blueberry Breakfast Cake
Cuisine: American
Ingredients: 1 cup unsweetened applesauce; ¼ cup pure maple syrup; ½ cup coconut sugar; ½ cup almond butter; 1 cup unsweetened almond milk; 1½ teaspoons pure vanilla extract; 1¾ cups plus 2 tablespoons whole-grain spelt flour, divided; ½ cup old-fashioned rolled oats; 2 teaspoons ground cinnamon; 1½ teaspoons baking powder; 1 teaspoon ground ginger; ½ teaspoon ground nutmeg; ½ teaspoon ground allspice; ¼ teaspoon baking soda; ¼ teaspoon fine sea salt; 1½ cups fresh or defrosted frozen blueberries; ½ cup shelled pistachios (about 60 grams, or 4 ounces unshelled pistachios), finely chopped