01 - Preheat oven to 350°F. Line a standard 12-cup muffin tin with paper liners or grease thoroughly.
02 - In a large bowl, whisk together oats, baking powder, cinnamon, and salt until well blended.
03 - In a separate bowl, combine applesauce, milk, eggs, honey or maple syrup, melted coconut oil or butter, and vanilla extract. Whisk until smooth and fully incorporated.
04 - Pour wet ingredients into dry ingredients. Stir until just combined, being careful not to overmix.
05 - Gently fold in any desired add-ins such as berries, nuts, or chocolate chips.
06 - Divide oatmeal mixture evenly among prepared muffin cups, filling each approximately 3/4 full.
07 - Bake for 22-25 minutes until cups are set and lightly golden on top. Remove from oven and let cool in pan for 10 minutes.
08 - While cups cool, mix Greek yogurt with honey or maple syrup in a small bowl until sweetened to taste.
09 - Transfer oatmeal cups to wire rack to cool completely. Top each cup with sweetened Greek yogurt and garnish with fresh berries or fruit before serving.