Make "1" cake topper. Create pattern for topper by printing or tracing a 3 inch high "1" on paper. Place under parchment paper and tape to cake circle.
Melt bright white Candy Melts candy in disposable bag according to package directions. Cut off small tip. Outline and fill in "1" with melted candy. Immediately cover with White Nonpareils. Chill until set, about 10 to 15 minutes.
Carefully remove candy "1" from parchment paper; trim edges as needed with knife. Attach Lollipop Stick to back of topper with melted candy, leaving 1 1/2 inches for cake insertion. Chill until set, about 5 to 10 minutes.