In a food processor, processor cookies until fine crumbs

Dump cookies onto 8inch spring form pan

Pour melted butter, mix, and pat firmly

Bake on preheated 325 F for 5 mins

Meanwhile, beat cream cheese with sugar until completely combined

Beat in 3 eggs, one at a time, until completely combined

Beat in the last egg, until just combined

Divide batter into three

Melt choc chips on 30 secs intervals in microwave

Add vanilla essence to one, peppermint extract to another and melted choc chips to the last

Add food coloring, red to one, green to other, leave the last as is

Drop spoonful of each batter, alternating each time, creating marble effect

Bake on preheated 325 F until center is almost set, at least 40 mins

Run a knife on sides, cool on rack inside the pan to room temperature

Chill cake still in the pan for at least 4 H, best overnight, before serving