Line a 13x9 inch baking pan with parchment paper, extending parchment paper over edges of the pan. Spray parchment paper with cooking spray or softened butter.
Place white and semi sweet chocolate chips in separate bowls.
12 oz. Ghirardelli White Baking Chips, 12 oz. Ghirardelli Bittersweet or Semi Sweet Chocolate Chips
Divide the marshmallow creme evenly between both bowls.
7 oz. Jar of Marshmallow Creme
Add 1/4 tsp of peppermint extract to the bowl with white chips.
Add the remaining 1/4 tsp of peppermint extract and the 1/2 tsp. of vanilla extract to the bowl with chocolate chips.
Combine sugar, evaporated milk, and the butter in a saucepan.
4 Cups Sugar, 12 oz. Can of Evaporated Milk, 3/4 Cup Butter
Cook and stir over medium-high heat until boiling; reduce heat to medium. Continue cooking and stirring for 10 minutes.
Pour hot mixture evenly over the chips in the bowls and stir each until melted and smooth.
Working quickly, pour dark chocolate fudge into the prepared pan and spread evenly.
Now pour the white fudge on top and spread evenly.
Sprinkle with peppermint candies [if using]
Cover and chill for at least 4 hours in the refrigerator until firm.
When the fudge is firm, use the parchment paper to lift it out of pan. Cut fudge into 1 inch squares.
Enjoy!