Step 1

In a saucepan, cook cream and sugar over medium heat, stirring constantly.

Step 2

Stir in butter and continue cooking until the mixture reaches 240°F.

Step 3

Cook the mixture until it reaches the desired temperature for soft or firm fudge.

Step 4

Remove from heat and stir in vanilla extract.

Step 5

Pour the fudge into a dish and let it cool before cutting into squares.