I made some cake balls, which I refer to as "bon bons" with leftover cake scraps, crushed oreo cookies and left over butter cream...no particular recipe, but I would guess that I used about 3 cups of white cake scraps, 1 cup of cookies crushed up very fine, about a cup of butter cream....mixed together thoroughly.... I used a pastry blender to mix and it worked perfectly.... then I used a cookie scoop...about the size of a golf ball and made perfect little balls, chilled them, then dipped them into melted white chocolate...... I've been an avid baker for about 15 years and so far... NOTHING has been more popular!
A local bakery sells them for about a dollar a piece but they rarely have them!!