Prepare your muffin tins by greasing and dusting. preheat oven at 175 degrees celcius
In a large mixing bowl, sift in the flour, baking powder, baking soda and the rest of the spices.
In another bowl, break in the eggs and add in the sugar. whisk until the r43w turns foamy. add in the oil and the butter and whisk again.
Add the dry ingredients into the wet ingredients; plus the mashed sweet potato and 2/3 of the nuts. mix until the dry ingredients are absorbed. let sit for about 10 minutes.
Transfer the batter into the muffin tins, to 3/4 full. Add some nuts on top and sprinkle some sugar.
Tap and bake in the preheated oven for 25 minutes
Remove from oven and allow to cool before serving
