Devil's Food Samoa Cupcake with a Caramel Buttercream

Devils' Food Samoa Cupcakes with Caramel Buttercream Ingredients 3/4 cup unsweetened Dutch-process cocoa powder 3/4 cup hot water 3 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon baking powder 1 1/4 teaspoons coarse salt 1 1/2 cups (3 sticks) unsalted butter 2 1/4 cups sugar 4 large eggs, room temperature 1 tablespoon plus 1 teaspoon pure vanilla extract 1 cup sour cream, room temperature 1 box of Samoa Girl Scout Cookies Directions Preheat oven to 350 degrees. Line standard muffin tins with paper liners. Whisk together cocoa and hot water until smooth. In another bowl, whisk together flour, baking soda, baking powder, and salt. Melt butter with sugar in a saucepan over medium-low heat, stirring to combine. Remove from heat, and pour into a mixing bowl. With an electric mixer on medium-low speed, beat until mixture is cooled, 4 to 5 minutes. Add eggs, one at a time, beating until each is incorporated, scraping down sides of bowl as needed. Add vanilla, then co...