Banana Chocolate Chip Baked Oatmeal Cups

"These Banana Chocolate Chip Baked Oatmeal Cups are an easy, healthy breakfast (yes, you can swap the chocolate for blueberries if you want!) that is make ahead, freezer friendly, and packed with protein and fiber. These Banana Chocolate Chip Baked Oatmeal Cups are packed with good stuff — vanilla and cinnamon and banana and chocolate chips and even baking powder, which I took out in my first version. None of these are really necessary, and you should feel free to adapt to your needs, but I do think this version is my favorite yet."