Vegan German Streusel Cake

Name: Vegan German Streusel Cake
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: European, German
Ingredients: ⅓ cup brown sugar packed; ¾ cup unbleached all-purpose flour; 2 tsp ground cinnamon; ½ tsp salt; ½ cup cold unsalted vegan-friendly butter diced into small cubes; 2¼ cups unbleached all purpose flour; 2 tsp baking powder; 2 tsp cornstarch; ½ tsp baking soda; 1 tsp salt; 1 ¼ cup granulated white sugar; ¾ cups unsalted vegan butter room temp; 1 cup unsweetened soy milk, room temperature; 1 tbsp apple cider vinegar; 2 tsp vanilla extract; ¾ cup coconut milk, room temperature; Drizzle; ¾ cup Powdered sugar; 2 tsp Soy milk