Melt chocolate chips in microwave over low heat in a pan. Meanwhile, put a cooling rack on top of cookie sheet. Slice croissant in half and put the halves side by side on the rack. Pour the melted chocolate over the croissant halves, coating the entire surface.
Let sit for about 15 minutes or til chocolate is firm. Fill bottom half of croissant with ice cream and place the other half on top. If desired, serve with whipped cream and raspberries. Makes 1 serving.