5tbspunsalted butterdivided; 4 tbsp for vanilla layer, 1 tbsp for ganache
0.5cupinstant vanilla pudding mixdry; not prepared
2tspvanilla extract
0.25tspfine sea salt
2cupsemi-sweet chocolate chips
0.75cupheavy cream
1tbsplight corn syrupoptional, for shine
Instructions
Preparation Steps
Line an 8 x 8 inch baking pan with parchment, leaving overhang on two sides to lift. Lightly grease the parchment.
Make the vanilla custard fudge: In a medium saucepan over low heat, add white chocolate chips, sweetened condensed milk, and 4 tbsp butter. Stir constantly until melted and smooth.
Remove from heat and quickly stir in the dry instant vanilla pudding mix, vanilla extract, and salt until silky and thick. Spread evenly into the prepared pan. Chill for 10 minutes.
Make the chocolate ganache topping: Heat heavy cream in a small saucepan until steaming (do not boil). Pour over semi-sweet chocolate chips, add remaining 1 tbsp butter and corn syrup, and let sit for 2 minutes, then stir until smooth and glossy.
Pour the ganache over the vanilla layer and tilt the pan to level. Chill until fully set, about 2 hours.
Lift the slab out using the parchment and cut into 25 squares, wiping the knife between cuts for clean edges. Serve slightly chilled or at cool room temperature.
Notes
For the cleanest cuts, warm the knife under hot water and dry between slices. Store tightly covered in the refrigerator for up to 7 days, or freeze for up to 2 months. For a stronger custard note, add an extra 0.25 tsp vanilla bean paste.