Classic Coffee Cake

Name: Classic Coffee Cake
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 9
Ingredients: Ingredients; Streusel Topping; 1/3 cup butter, softened; 1/3 cup all-purpose flour; 1/3 cup packed brown sugar; 1 teaspoon ground cinnamon; 1/4 teaspoon salt; 2 cups all-purpose flour; 3/4 cup granulated sugar; 2 1/2 teaspoons baking powder; 1 teaspoon salt; 1/3 cup butter, softened; 3/4 cup whole milk; 1 large egg; 1 teaspoon vanilla extract; Glaze (Optional); 1 cup powdered sugar; 2-3 tablespoons milk; 1/2 teaspoon vanilla extract