Step 1

Prepare an 8 x 8 inch pan with parchment paper and a thin layer of non-stick spray. Set aside.

Step 2

Melt butter over medium heat in a large saucepan.

Step 3

Once the butter has melted, add sugar, evaporated milk, and Coca-Cola. Bring mixture to a full boil, stirring constantly.

Step 4

When it has reached a full boil, cook for 5 minutes while it boils, stirring constantly*. The mixture should thicken slightly. If it does not, stir and boil for another 1-2 minutes.

Step 5

Remove pot from heat and add chocolate chips and marshmallow cream. Mix well until the texture is smooth.

Step 6

Stir in ½ cup walnuts.

Step 7

Pour fudge mixture into pan and sprinkle with remaining walnuts.

Step 8

Refrigerate fudge for 2 hours, or until firm.

Step 9

Slice into bite-sized pieces and enjoy.