Step 1

Heat the oven and grease muffin pan: Arrange a rack in the middle of the oven and heat to 350°F. Coat the wells of a standard 12-well muffin tin very well with cooking spray.

Step 2

Mix the wet ingredients: Place the eggs, milk, applesauce, nut butter, maple syrup, and vanilla in a medium bowl and whisk until smooth.

Step 3

Add the dry ingredients: Add the oats, baking powder, cinnamon, and salt and fold with a rubber spatula until combined.

Step 4

Fill the muffin tin: Divide the oatmeal mixture among the muffin wells, filling each one up to the top.

Step 5

Top the muffins: Sprinkle the muffins with the nuts and dried fruit if using. Gently press the toppings into the batter.

Step 6

Bake until golden: Bake until slightly risen, dry on top, and golden-brown, 25 to 30 minutes.

Step 7

Cool for 5 minutes: Cool in the pan on a wire rack for 5 minutes. Run a knife around each muffin and remove to a cooling rack to cool completely.