Oatmeal Cake

Name: Oatmeal Cake
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: American
Ingredients: 1 & 1/2 cups hot whole milk; 1 cup old fashioned rolled oats; 1 & 1/3 cups all-purpose flour (, spooned and leveled); 1 teaspoon cinnamon; 1 teaspoon baking soda; 1/2 teaspoon coarse salt; 1/2 cup unsalted butter (, at room temperature); 1 cup brown sugar; 1 cup granulated sugar; 2 large eggs; 1 teaspoon vanilla; 1/2 cup unsalted butter; 1 tablespoon whole milk; 1 cup unsweetened coconut flakes; 1/2 cup finely chopped pecans; 1/4 cup granulated sugar ((optional))