Step 1: Prepare the Pan

1. Line an 8×8-inch square baking pan with foil, leaving some overhang on the edges for easy removal. Set aside.

Step 2: Melt the Base Ingredients

1. In a large microwave-safe bowl, combine the white chocolate chips, butter, and water.
2. Microwave on high for 1 minute, then stir until the mixture is smooth and the chocolate chips are melted. If necessary, microwave for an additional 30 seconds, stirring again until fully melted.

Step 3: Add Pudding Mix and Sugar

1. Stir the dry pistachio pudding mix into the melted chocolate mixture until fully incorporated.
2. Gradually add the powdered sugar, 1 cup at a time, mixing thoroughly after each addition until the mixture is smooth and thick.

Step 4: Add Pistachios and Press Into Pan

1. Fold in the chopped pistachios until evenly distributed.
2. Press the fudge mixture evenly into the prepared baking pan using a spatula or your hands.

Step 5: Chill and Slice

1. Place the pan in the refrigerator and chill for at least 2 hours, or until the fudge is firm.
2. Once set, lift the fudge out of the pan using the foil overhang. Peel off the foil and slice the fudge into squares using a sharp knife.

Storage:

• Store in an airtight container in the refrigerator for up to 1 week or freeze for longer storage.