Frozen Confetti Cheesecake
["1 (10 oz.) pkg. shortbread cookies, crushed", "1 c. walnuts (optional)", "1 stick butter, melted", "2 (8 oz.) pkg. cream cheese", "1 c. sugar", "1 egg yolk", "4 Tbsp. juice (orange)", "1 container Cool Whip", "1 c. frozen, chopped M&M's (use fun chips)"]
["Combine cookies, walnuts and butter in a 9 x 13-inch baking pan; press in place.", "Chill.", "Beat cream cheese, sugar, egg yolk and orange juice with mixer in a large bowl until smooth.", "Fold Cool Whip into cream cheese.", "Stir in candies.", "Spoon over crust and freeze until firm.", "Thaw for 15 minutes before serving."]
["shortbread cookies", "walnuts", "butter", "cream cheese", "sugar", "egg yolk", "frozen"]