It may sound kinda dumb but since everyone is talking about mixer speed and the speed of which you pour the liquid ingredients, have you considered that maybe your making too big of a batch of whatever. I'll admit that I do this and still do, I bake up large batches of cookies during the Christmas season.
If this is the case, sometimes the speed of your mixer dosn't matter much but it does help to reduce the mess made. I find sometimes a wet towel around the spill guard can help. |