Preheat the oven to 350ºF. Line a muffin tin with parchment paper cups or use silicone cups like these which also work freestanding on a baking sheet.
Add all of the ingredients to a blender and pulse until smooth. Pour into 10 muffin cups and top with a few extra oats if you like.
Transfer to the oven and bake until set, about 15 to 20 minutes (18 works perfect for my oven).