01 - Preheat oven to 350°F. Line a standard 12-cup muffin tin with paper liners or grease thoroughly with nonstick spray.
02 - In a large bowl, whisk together rolled oats, baking powder, ground cinnamon, and salt until evenly distributed.
03 - In a separate bowl, combine applesauce, milk, eggs, honey or maple syrup, melted coconut oil or butter, and vanilla extract. Whisk until the mixture is smooth and fully incorporated.
04 - Pour the wet ingredients into the dry ingredients. Stir with a spatula or spoon until just combined and no dry streaks remain.
05 - Gently fold in your chosen add-ins such as blueberries, diced apples, chopped nuts, chocolate chips, or dried fruit.
06 - Divide the oatmeal batter evenly among the prepared muffin cups, filling each cup approximately 3/4 full.
07 - Bake for 22 to 25 minutes, or until the oatmeal cups are set and lightly golden on top. Remove from oven and let cool in the pan for 10 minutes.
08 - Transfer the oatmeal cups to a wire cooling rack and allow them to cool completely before adding toppings.
09 - In a small bowl, mix Greek yogurt with honey or maple syrup to taste. Stir until smooth and well combined.
10 - Top each cooled oatmeal cup with a dollop of sweetened Greek yogurt and garnish with fresh berries or fruit of your choice.