Oatmeal boiling over in microwave

Every time I cook oatmeal in the microwave it boils over ALOT. I use the regular oats (not the quick oats) and mix them with a little milk (half the recommended amount on the Quaker oat box). I don't want to have to put my cup of oatmeal in a huge bowl to cook it in the microwave, so I was wondering if anyone had any ideas on how to keep it from boiling over so bad.