Chocolate & Salted Caramel Mug Cake

Ingredients
4 tablespoons all purpose flour
4 tablespoons sugar
3 tablespoons unsweetened cocoa powder
1/4 teaspoon baking powder
1/4 teaspoon salt
1 egg – beaten
3 tablespoons skim milk
1 tablespoon vegetable oil
2 salted caramels

Preparation method