Step 1

First, make 1 tablespoon-sized balls with Nutella hazelnut spread and place them in the freezer for 1 hour.

Step 2

Preheat oven to 350F.

Step 3

Melt the butter in a bowl in the microwave.

Step 4

In a medium-sized bowl, whisk the eggs with the sugar until the mixture is pale.

Step 5

Pour the melted butter into this mixture without stopping to mix.

Step 6

In a small bowl, mix the milk and yogurt together, and add to the previous mixture. Stir to combine

Step 7

Combine the flour, the ground hazelnuts, and the baking powder. Add to the previous mixture.

Step 8

Add the chocolate chips. Mix everything.

Step 9

Fill each mini-muffin cup up to 1/3, and place a scoop of frozen hazelnut spread in the center of each.

Step 10

Then cover with the remaining batter.

Step 11

Bake for 25 minutes at 350F.