Preheat oven to 350F. Line a muffin tin with paper liners or use nonstick. Mash beans in a bowl with fork or potato masher until well mashed. Add remaining ingredients, except oats, and stir to combine. Stir in oats. Spoon into muffin tin and pack down. Bake for 20 minutes until crisp on the outside and fairly firm to the touch (firms a bit as it cools). Serve with ketchup, Quick Gravy (Happy Herbivore Light & Lean, pg. 188), etc.