Cinnamon Nutella muffins

From http://sallysbakingaddiction.com/2013/05/05/nutella-stuffed-cinnamon-sugar-muffins-2/

This seems like a simple recipe but not really, because I used waay too many kitchen tools and bowls despite what the recipe touted. Hmm I could economise but then my OCD would kill me for not scraping the bowls/plates/measuring cups/etc clean enough. But taste wise it's great. I found the muffin not sweet enough so u really cant skimp on the cinnamon sugar topping.

Ingredients

75g or 5 tbsp butter, softened

½ cup sugar

1 tsp vanilla

1 egg

½ cup milk

1½ cup flour

1½ tsp baking powder

½ tsp cinnamon powder

¼ tsp nutmeg powder

½ tsp salt

8 tsp Nutella

Topping

45g or 3 tbsp butter, melted

2 tsp cinnamon powder

¼ cup sugar

Method

1) Preheat oven to 220 deg C. Prepare muffin tin with papers, liners, or just oil/butter. 

2) Cream butter and sugar till pale on high.

3) Add egg and beat, followed by vanilla and finally milk. Beat on medium till incorporated.

4) In a separate bowl, sift flour and baking powder. Toss with cinnamon, nutmeg and salt.

5) Add the dry ingredients to the wet in 3 batches, mix on low till just combined. Don't over mix.

6) Spoon in 1 heaped tbsp batter, followed by 1 tsp Nutella. Top with another heaped tbsp batter and smooth off the top. Fill empty muffin slots with water for even baking. (Recipe says it can make 8 or 9 but my liners were big, so it meant 4 tbsps in total of batter)

7) Bake for 5 mins at 220 deg C, then turn down without opening to 180 deg C for 13 to 17 minutes (mine took another 5 mins). 

8) Leave to cool in the tin for 5 minutes, then on a rack.

9) While cooling, prepare the topping. Melt the butter in a microwave in bursts of 10 seconds till u see it just melted. In anothet dish, combine the sugar and cinnamon.

10) Dip the muffin tops in butter and swirl around, then coat with cinnamon sugar.

11) Best eaten immediately or store in an airtight box.