Apple Coffee Cake

Name: Apple Coffee Cake
Prep time: 30 min
Cook time: 35 min
Total time: 1 h 5 min
Cuisine: American
Ingredients: 1 tablespoon Challenge Unsalted Butter ((14g)); 2 Granny Smith Apples ((200g when cut, about 2 cups)); 2 tablespoons (25g) granulated sugar; ½ teaspoon cinnamon; ¼ cup Challenge Unsalted Butter ((57g), melted); ¾ cup (150g) granulated sugar; 1 large egg; ½ cup (119ml) milk; 1 ½ cups (186g) all-purpose flour; 2 teaspoons baking powder; ½ teaspoon salt; 1 teaspoon cinnamon; 1 cup (200g) packed brown sugar; 2 tablespoons (16g) all-purpose flour; 2 teaspoons cinnamon