The Evil Fridge

My 4 year old thinks that making his own meals it great. Turn the stove on...turn the microwave on..all that sorta stuff. If only I could put a force shield around my kitchen to block him from going in their every 10 seconds to find what he could make for me...Nana, grandma really who ever. I am so tired of this...does anyone have any suggestions for a very independent 4 year old???