Step 1

Line a 9 x 9 inch pan with non-stick foil. Set aside.

Step 2

Place semi-sweet chocolate chips and food coloring in a heat safe bowl and set aside.

Step 3

In a large, heavy saucepan, combine, sugar, butter and half and half. Cook to 234º, stirring occasionally. Immediately add white chocolate chips, marshmallow cream and vanilla. Mix to combine.

Step 4

When well mixed, scrape half of the white chocolate fudge into the bowl with the semi-sweet chocolate chips and mix till melted and smooth.

Step 5

Using two medium cookie scoops or tablespoons, place scoops of red and white fudge in the prepared pan, alternating flavors.

Step 6

Drop pan from a few inches above counter a couple times to remove any air pockets. With a knife, swirl though the fudge to give a marbelize appearance.

Step 7

Allow to cool at room temperature. When cool, remove from pan using foil and cut into squares.