Butterbeer Cupcakes

Name: Butterbeer Cupcakes
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Cuisine: American
Ingredients: 2/3 cup butterscotch morsels; 2 tablespoons water; 3/4 cup granulated sugar; 3/4 cup brown sugar (packed); 3 eggs (room temperature); 2 1/4 cup all-purpose flour; 1/2 teaspoon baking powder; 3/4 teaspoon baking soda; 2/3 cup vegetable oil; 1/2 teaspoon salt; 1 cup milk; 1 cup unsalted butter at room temperature; 4 tablespoons butterscotch sauce; 1 teaspoon vanilla extract; 4 cups powdered sugar; 2-4 tablespoons cup milk if needed to make frosting easy to pipe; Butterscotch sauce for drizzling