Vegan Coffee Cake with Cinnamon Streusel

Name: Vegan Coffee Cake with Cinnamon Streusel
Cook time: 1 h 20 min
Total time: 1 h 20 min
Cuisine: European, American, German
Ingredients: 1 cup chopped walnuts; 1 teaspoon ground cinnamon; 2.25 cups whole-wheat pastry flour, divided; 1.25 cups packed light brown sugar, divided; 3 tablespoons vegan butter (such as Miyoko's Cultured Vegan Butter), plus 1/2 cup, melted and divided; 0.125 teaspoon salt plus 1/2 teaspoon, divided; 1 teaspoon baking powder; 1 teaspoon baking soda; 1 cup unsweetened plain almond milk; 1 tablespoon cider vinegar; 1 teaspoon vanilla extract