Step 1

Pour the melted chocolate in a small rimmed plate that fits your cup and the chopped peanuts in another.

Step 2

Turning the cup upside down, dip the rim into the chocolate, moving and twisting it around to make sure its well coated. Alternatively, use a clean paintbrush dedicated for kitchen use, to paint the chocolate around the rim of the cup.

Step 3

Dip the chocolate covered rim into the peanuts. If needed, gently press the peanuts with your fingers to adhere. Chill the cups in the fridge or freezer to set.

Step 4

Take a tablespoon or two of the milk, and whisk it with the cornstarch in a small bowl. Set aside.

Step 5

Place the remaining milk, cocoa powder, chocolates and peanut butter in a medium saucepan over medium heat.

Step 6

Heat the mixture, whisking constantly but gently, until the chocolate and peanut butter are completely melted and the mixture is steaming, about 5-8 minutes. Do not let it come to a boil. The mixture should be completely smooth and silky without little bits and dots of chocolate.

Step 7

Pour in the cornstarch mixture and whisk together. Continue to heat while constantly whisking until the mixture thickens slightly, about 1 minute.

Step 8

Place one scoop (or more if preferred) of vanilla ice cream in each cup, then pour the hot chocolate mixture over it. The ice cream will float up.

Step 9

Garnish with whipped cream, chocolate syrup and a peanut cup, if desired. Serve right away.