Combine graham cracker crumbs, butter and sugar. Press mixture into bottom of wax paper-lined spring form pan. Set aside.
Sprinkle the gelatin over the water in a small bowl; let stand for 2 minutes. Melt gelatin mixture in microwave for 10 to 15 seconds; set aside to cool.
Beat cream cheese and sugar until light and fluffy, about 3 minutes. Fold in whipped topping and 2 cups of chopped 3 MUSKETEERS® Mint Minis into cream cheese mixture. Fold in the cooled gelatin mixture until well blended.
Spoon mixture evenly over crust into pan. Refrigerate until set (4 hours).
Unmold cake by running a thin knife around the outer edge of the pan and open the spring form pan. Cut cake into slices using a knife dipped in hot water.