Muffins filled with chocolate peanut

Ingredients:

3/4 cup flour
1 tsp. baking powder
1/3 cup sugar
1 pinch of salt
1/2 cup milk
1 egg
1 tsp. vanilla
2 tbsp. peanut butter
2 tbsp. amaranth
mini chocolate chips
For cover:
2 sticks of butter
1/2 cup peanut butter
2 cups powdered sugar


Procedure:

In a bowl mix flour sifted through a sieve together with the baking powder, sugar, and pinch of salt.
Besides milk mixture along with the egg until blended, then pour this mixture into the bowl of dry ingredients.
Add vanilla, peanut butter, amaranth and mixed with the help of balloon whisk until blended perfectly.
Pour into small muffin molds halfway, put 2 mini chocolate chips and fill three quarters of the mold.
Bake at 180 ° C for 20 minutes or until toothpick inserted in center comes out clean.
Let cool before unmolding.
In a blender acrema previously softened butter at room temperature, add the sugar and peanut butter.
Place in a sleeve and covers the surface of the mini muffins.