Brownie Batter Overnight Oats

0 In a mason jar, tupperware, or something with a lid, mix together all ingredients except the chocolate chips if you're using. You can mix them in if you'd like, but it's up to you.
1 If you like it a little sweeter, add 2 tsp maple syrup. I typically do 1. If you like your oats thicker, do ⅓ cup milk, if you like them a little on the thinner side, use ½ cup milk! 
2 Store in the fridge overnight. In the morning, top with chocolate chip if using! Feel free to add some banana or berries and I always add peanut butter.