Preheat oven to 350. In a large bowl, toss oats, salt, cocoa powder and peanuts. In a saucepan, heat oil, peanut butter, honey, brown sugar, stirring occasionally, until the sugar has dissolved and the mixture bubbles a bit. Remove from heat and stir in vanilla. Pour liquid ingredients into the oat mixture and stir until the oats are evenly coated. Spread oats onto a nonstick cookie sheet. Bake for 10 minutes, then remove and gently toss the granola (if you want chunkier granola, just run a spatula under the granola and gently rearrange). Turn off the oven and put the granola back in for up to an hour to dry, tossing once more along the way. When granola is cool, store in an airtight container. Now the hardest part: try not to eat it all.