Preheat the oven to 350°F & grease 12 well muffin pan + grease another 4-5 wells of another pan. (recipe makes approx 16)
In mixer bowl, beat eggs with sour cream, oil, & sweet potato mash.
Beat in the brown sugar and vanilla.
Add flour, baking powder, cinnamon, baking soda & salt.
Fold in ½ the walnuts, mixing until just combined.
Divide the batter evenly into the prepared muffin pan. (I used a med cookie scoop to get even portions)
Sprinkle with walnuts & raw sugar.
Bake for 18 - 20 mins.
Prepare glaze by combining ingredients & whisking well.
Once muffins have cooled, drizzle over the top of each muffin