01 -
Line a 9 by 13 inch baking dish with parchment or aluminum foil and coat lightly with nonstick spray.
02 -
In a large microwave-safe bowl, combine Velveeta, butter, and unsweetened chocolate. Microwave in 30-second increments, stirring intermittently, until fully melted and the mixture is smooth.
03 -
With an electric mixer, gradually add the powdered sugar to the melted chocolate mixture, mixing after each addition until integrated and thickened.
04 -
Blend in vanilla extract, ensuring it is evenly distributed throughout the mixture.
05 -
Use a wooden spoon or spatula to stir in the chopped pecans until evenly incorporated.
06 -
Spread the fudge mixture evenly into the prepared pan, smoothing the surface with an offset spatula.
07 -
Refrigerate for a minimum of 3 hours, or until firm. Once set, cut into 1-inch squares for serving.