Homemade Spiced Rum Cake

Name: Homemade Spiced Rum Cake
Prep time: 15 min
Cook time: 55 min
Total time: 1 h 10 min
Cuisine: American
Ingredients: 1-3/4 cups all-purpose flour; 4 teaspoons baking powder; 3.4 ounce pkg vanilla instant pudding; 1/4 cup cornstarch; 1 teaspoon salt; 1/2 cup butter at room temperature; 1-1/2 cups sugar; 1/2 cup plus 3 tablespoons vegetable oil; 4 eggs; 3/4 cup milk; 3/4 cup Spiced Dark Rum (I used Sailor Jerry); 1 tablespoon vanilla extract; powdered sugar; 1/2 cup butter; 3/4 cups granulated sugar; 1/4 cup water; 1/2 cup spiced rum *see notes; 1/2 teaspoon salt