01 -
Line an 8x8 inch square pan with parchment paper, leaving an overhang on two sides for easy lifting.
02 -
Combine half the white chocolate chips, half the condensed milk, and 2 tablespoons butter in a microwave-safe bowl. Heat in 30-second bursts, stirring between each, until smooth and thick. Stir in 1/2 teaspoon green apple extract, a pinch of salt, and enough neon green gel coloring to reach a bright green. Pour into the prepared pan and spread to the edges.
03 -
Repeat the melting process with the remaining chocolate, condensed milk, and butter. Stir in the remaining 1/2 teaspoon extract, a pinch of salt, and black gel coloring until deep black. Pour over the green layer and smooth the top.
04 -
Refrigerate for at least 3 hours until completely firm. Overnight is even better if you have the time.
05 -
Lift the fudge out using the parchment overhang. Cut into 1-inch squares with a sharp knife, wiping the blade clean between cuts.