Oatmeal Problem & Solution

Awhile back I told you about my morning oatmeal.
I had been making on the stove until we moved into the Coastal Casa. Twice now I've burned my oatmeal in our teeny, weeny--itty, bitty kitchen. So I decided to save on cleanup and simply make the oatmeal in the canning jar that make up ahead of time. 
It sure was a quick cook, BUT what a mess it made. 
I tried:
 covering the jar with a paper towel, 
a coffee filter, 
a plate, 
a paper plate, 
a paper plate with steam vents cut in it. 
I tried leaving it uncovered. 
I tried using less water, less oats. 
Nothing was working. 
It was bugging me.
 Then I saw a tip on Pinterest. 
It was for cooking pasta on the stove top. It said put a wooden spoon across the pot and the pasta won't boil over. And I wondered if it would work for my oatmeal.
It did! 
For whatever reason it does NOT boil over...not one drop. 
So simple.

Here's my recipe:
I use a pint canning jar.
1/2 c. oats--I like thick rolls oats, not the quick oats.
1-2 TBSP dried cranberries
abt 1 TBSP walnuts or slivered almonds
a dash of cinnamon
a pinch of salt
I make up about a dozen jars at a time. 
When I'm ready to use one I add 1 cup of water, stir, pop in microwave for about 2-2 1/2 minutes. 
After cooking I add sweetener: for me 2 tsps brown sugar; Coach likes honey. 
Then I top it off with a couple of TBSP of yogurt. 
I let it sit for a while because its so hot.