Preheat oven to 350 degrees and line cupcake pan with liners

In a standing mixer beat sugar and butter until creamed

Add egg and mix until fully incorporated

Beat in vanilla extract, salt, baking soda, baking powder, and cinnamon.

Combine the heavy cream into the wet mixture

Add in flour, a little at a time.

Add in the sour cream

Spoon batter about 1/2 full.

Bake in oven for about 22 minutes or until the centre of the cupcake comes out clean with a toothpick.

Combine all ingredients into a standing mixer and mix on low speed until combined and stiff peaks form

Scoop frosting into a piping bag fitted with a star tip.

melt the 1 cup of butter and set aside

add the sugar and 2 tbsp of cinnamon into another bowl and mix

Dip the top of the cupcakes into the melted butter and then dip it into the cinnamon sugar mix

frost the cupcakes with the cinnamon frosting and top with a churro.

Enjoy