Microwave Fudge

Combine sugar, evaporated milk, margarine, and salt in a large microwave-safe bowl.

Microwave the mixture on high for 2 minutes, stirring once halfway through, until the sugar dissolves and the mixture is hot.

Stir the mixture thoroughly, then microwave on high for an additional 3 minutes, stirring halfway through the cooking time.

Remove the bowl from the microwave and allow it to cool for 1-2 minutes until no longer actively steaming.

Add marshmallow cream, semi-sweet chocolate chips, and vanilla to the warm mixture, stirring constantly until the chocolate and marshmallow are completely melted and incorporated.

Fold in chopped nuts if desired, stirring until evenly distributed throughout the fudge mixture.

Pour the fudge into a parchment-lined 8×8-inch pan, spreading it evenly with a spatula or the back of a spoon.

Allow the fudge to cool at room temperature for at least 2 hours, or refrigerate for 30 minutes until firm enough to cut.

Cut the fudge into squares using a sharp knife, wiping the blade between cuts for clean edges. Store in an airtight container at room temperature.