Line a 8-inch square pan with parchment paper.

Remove the top from the can of sweetened condensed milk and stir in the green food coloring until the milk is bright green.

Add the green condensed milk to a saucepan, along with the white chocolate chips and butter. Warm over medium heat, stirring frequently, until melted and smooth.

Stir in the green apple extract, then pour the fudge mixture into the prepared pan. Allow to harden completely.

Remove the green fudge from the pan and peel off the parchment paper. Place a new layer of parchment paper in the bottom of the pan.

Remove the top from the sweetened condensed can and stir in the black food coloring, until the milk is a black color.

Pour the black colored condensed milk into a clean saucepan along with white chocolate chips and butter. Heat over medium or medium low until melted and smooth. Stir frequently.

Stir in the green apple extract and pour half of the black fudge into the bottom of the prepared pan.

Take the block of green fudge and place on top of the black layer. Gently tree sown, but not so much that you push the black fudge mixture through.

Pour the remaining black fudge on top and spread with a spatula as needed to cover the entire green later.

Place the pan in the fridge to chill and harden.