1. Set aside 2 tablespoons crushed cookies for garnish. Combine the remaining crushed cookies, 3 tablespoons caramel topping and the melted chocolate chips; press onto the bottom and up the sides of a greased 9-in. pie plate. Spread ice cream over crust. Freeze.
2. For sunflower, place reserved cookies in a 2-i. circle in center of pie. Top with walnuts. For the petals, drizzle or spread remaining caramel topping over ice cream. Outline petals with decorating gel. Freeze. Remove from the freezer 10 minutes before cutting. Yield: 6-8 servings.