Step 1

Preheat oven to 425°F and line a muffin pan with liners.

Step 2

In a medium bowl, combine the flour, baking powder, baking soda, apple pie spice, and salt.

Step 3

In a large bowl, mix together the butter, oil, and sugars until smooth.

Step 4

Add eggs, vanilla, and buttermilk.

Step 5

To the wet ingredients, add the flour mixture. Mix until just combined. Set aside.

Step 6

In a small bowl, mix together apples, granulated sugar, and apple pie spice.

Step 7

Gently fold apples into muffin batter.

Step 8

Divide the batter evenly between the 12 muffin cups. (They should be filled to the top of the muffin liner!) Bake for 18-20 minutes, or until an inserted toothpick comes out with a few crumbs, but no wet batter. As the muffins are baking, make the glaze.

Step 9

To a microwave-safe bowl, add butter and maple syrup. Warm it up in 30-second intervals until fully incorporated. (You could also use a saucepan over medium-low heat.)

Step 10

Stir in confectioners' sugar.

Step 11

Drizzle the glaze over the warm muffins.