Apple Crumb Cake

Name: Apple Crumb Cake
Prep time: 15 min
Cook time: 50 min
Total time: 1 h 5 min
Cuisine: American
Ingredients: 1 cup (200g) packed light or dark brown sugar; 1/2 cup (100g) granulated sugar; 1 Tablespoon ground cinnamon; 1/2 teaspoon salt; 1 cup (2 sticks; 230g) unsalted butter, melted; 2 and 1/2 cups (313g) all purpose flour (spoon & leveled); 1 teaspoon baking soda; 1/2 teaspoon baking powder; 3/4 cup (1.5 sticks; 170g) unsalted butter, softened to room temperature; 1 and 1/4 cups (250g) granulated sugar; 3 large eggs, at room temperature; 1 cup (240g) full-fat sour cream, at room temperature*; 2 teaspoons pure vanilla extract; 2 cups peeled chopped apples (about 2 medium apples); 1/4 teaspoon ground cinnamon; maple icing, vanilla icing, or caramel icing