Are you feeling soft-hearted this Valentine's Day? Reach for some marshmallows and transform them into confections of affection. Start by greasing a heart-shaped petit four cutter or aspic cutter with vegetable oil or cooking spray. Cut several marshmallows in half horizontally, and then press the cutter into the center of each one. Float the marshmallows and the cutouts on hot chocolate

4 cups whole milk
2 tablespoons sugar
2 tablespoons plus one teaspoon unsweetened Dutch-process cocoa powder

4 tablespoons finely chopped or shaved semisweet chocolate

Bring all ingredients to a simmer in a medium saucepan over medium heat, stirring until chocolate has melted (do not let boil). Pour into mugs, and serve.