Step 1

Line a 9-inch square baking dish with parchment paper. Set aside.

Step 2

In a large mixing bowl, add chocolate chips and marshmallow cream and set aside.

Step 3

In a large saucepan, combine sugar, butter, and heavy cream over medium-high heat and stir constantly until mixture begins to boil. Watch carefully and keep at a rolling boil for 4-5 minutes, stirring constantly.

Step 4

Remove mixture from heat and slowly stir Irish cream into the hot cream mixture. Pour this hot mixture over the chocolate chips and marshmallow cream in the mixing bowl.

Step 5

Using an electric mixer, beat the mixture until the chocolate is completely melted and the mixture is creamy, about 1-2 minutes. Pour into prepared pan and refrigerate for 4 hours.

Step 6

Once the fudge has chilled, melt the white chocolate chips in the microwave or in a double boiler. Drizzle the white chocolate over the fudge (it helps to do it off a spoon). Evenly spread sprinkles over the top and chill for 1 hour. Remove the fudge by lifting the parchment paper out of the pan, then cut into 1-inch or 2-inch pieces.