I'm copying this directly from my friend Safire's blog.
1/2 c brown sugar
1/2 c oil
1/2 c honey
2 tsp cinnamon
2 tsp vanilla
7 c oats
Mix the honey, oil and vanilla in a small saucepan until they are all melted. (I always forget this step and it turns out fine.) In a separate bowl combine the dry ingredients. Pour the honey mixture over the oat mixture and stir until combined. Spread out on a greased 9×12 pan and cook for 10 min at 375 degrees. Take it out of the oven and stir it. Return it to the oven and then turn the oven off and it let sit overnight. Wake up to a yummy breakfast and a house that smells amazing!
You can add a whole bunch of stuff to this to make it even better. I always use coconut oil and it gives it a very sweet flavor, but canola oil works fine too. You can add almonds, cashews, or any kind of nut that you wish. Shredded coconut, raisins, chopped dates, flax seed, and sunflower seeds.
I made this a week ago and have been loving it ever since. I sprang for coconut oil, which my child somehow manged to make fall out of the cupboard, a couple days later, wasting $8.09 but I had everything else in the house. I could have used canola oil, I had that at home. I added wheat germ to mine, it's so yummy, the kids can't tell it's healthy.