Sprinkling means to scatter or distribute something (like water or salt) in small amounts over a surface. It can also refer to a small number of things or people spread out across an area.
Your presentation using a molded cup serving of rice sprinkled with scallions one of the best looking & freshest tasting red beans & rice I've ever eaten! (whatwouldcathyeat.com)
We made a maple and chocolate topping with sprinkles of course. (101cookbooks.com)
My piping skills are super mediocre so I might need a lot of sprinkles on top. (crumbtopbaking.com)