Preheat the oven to 400 degrees and line a muffin tin with paper liners.
Whisk the flour, baking powder, baking soda, salt, xanthan gum and spices in a large mixing bowl and set aside.
In a medium bowl whisk the mashed banana with the eggs, vanilla, oil, molasses, milk and sugars until smooth.
Combine the dry and wet ingredients together in the large bowl and whisk until thoroughly incorporated.
Fold in the cubed pear and oats. Scoop batter into the prepared muffin tin, sprinkle with the turbinado sugar, and bake for 18-20 minutes, or until a toothpick inserted into the center of a muffin comes out clean. Serve immediately.