Step 1

Over medium low heat, melt butter. Add half and half. Mix well.

Step 2

Pour in sugar and mix until melted. Turn up heat to just above medium, maybe medium high depending on how hot your stove gets. You don't want too much heat. Bring sugar mixture to a boil. Stir constantly. DO NOT STOP STIRRING.

Step 3

When the mixture begins to boil, use a candy thermometer or a handheld instant read thermometer to monitor temperature. Stir constantly until the temperature reaches 234°F. Don't let it go over! This took me about 7-8 minutes of boiling and stirring to reach this point. Be patient!

Step 4

Immediately remove from heat. Keep stirring. Pour in chocolate chips little by little. Completely melt each batch. When most of the chocolate is melted, stir in vanilla.

Step 5

Pour in marshmallow cream and mix until fully incorporated. Add nuts. Mix in.

Step 6

In a small cake pan (9x9, 8x8, 7xlined with parchment paper, pour in fudge mixture. Smooth top. Place in refrigerator and cool for about 3-4 hours.

Step 7

Remove from pan. Cut and enjoy!