Prepare the Pan
Line an 8×8-inch baking pan with parchment paper, leaving overhang for easy removal.
Chocolate Layer
Melt semi-sweet chocolate, butter, and 2 tbsp condensed milk in a small saucepan over low heat.
Stir constantly to prevent burning.
Pour into prepared pan, smooth with a spatula, and chill 10–15 minutes until firm.
Tip: Don’t pour the next layer too soon—this prevents mixing.
Strawberry Layer
Melt white chocolate with 1 tbsp condensed milk over low heat.
Stir in strawberry powder or puree and vanilla.
Pour over set chocolate layer, smooth gently, and chill until firm.
Vanilla Layer
Melt remaining white chocolate with condensed milk and vanilla.
Pour over the strawberry layer, smooth evenly, and chill at least 2 hours until fully firm.
Slice & Serve
Use parchment overhang to lift fudge out of the pan.
Slice with a sharp knife, wiping between cuts for neat edges.